Sc - Idiom Just as...so

[poonamchiK]

As it is with traditional pharmacies, on-line drugstores rely on prescriptions to be successful, since it is primarily prescriptions that attract the customers, who then also buy other health-related items.

(A) As it is with traditional pharmacies, on-line drugstores rely on prescriptions to be successful
(B) As with the case of traditional pharmacies, on-line drugstores rely on prescriptions to have success
(C) As is the case with traditional pharmacies, prescriptions are the cornerstone of a successful on-line drugstore
(D) As traditional pharmacies, so on-line drugstores rely on prescriptions to be successful
(E) Like traditional pharmacies, the cornerstone of a successful on-line drugstore is prescriptions

I was very close. What I want to ask here is that, I have heard the idiom 'Just as...So'.

But i have never heard the idiom As... So.
Nonetheless I got this question correct on fluke. But want to get some thoughts pouring on this As...So.

OA : D.

[singh.181]

As it is with traditional pharmacies, on-line drugstores rely on prescriptions to be successful, since it is primarily prescriptions that attract the customers, who then also buy other health-related items.

(A) As it is with traditional pharmacies, on-line drugstores rely on prescriptions to be successful
(B) As with the case of traditional pharmacies, on-line drugstores rely on prescriptions to have success
(C) As is the case with traditional pharmacies, prescriptions are the cornerstone of a successful on-line drugstore
(D) As traditional pharmacies, so on-line drugstores rely on prescriptions to be successful
(E) Like traditional pharmacies, the cornerstone of a successful on-line drugstore is prescriptions

I was very close. What I want to ask here is that, I have heard the idiom 'Just as...So'.

But i have never heard the idiom As... So.
Nonetheless I got this question correct on fluke. But want to get some thoughts pouring on this As...So.

OA : D.

Using POE (Process of Elimination), I can eliminate all the other answer choices but D. I dont recall As..So idiom.

[RonPurewal]

poonamchiK, please start searching the forum for existing threads on these problems -- lately you've been starting a new thread for every single problem that you post.
by this point practically all of the CR and SC problems on gmat prep have already been posted on this forum, so you should be able to find existing threads for almost every problem you're looking for.

for this one, see here:
as-it-is-with-traditional-pharamacies-on-line-drugstores-t2420.html