So poorly educated and trained are many young recruits to the United States work force that many business executives fear this country will lose its economic preeminence.
(A) ...
(B) As poorly educated and trained as many young recruits to the United States work force are,
(C) Because of many young recruits to the United States work force who are so poorly educated and trained,
(D) That many young recruits to the United States work force are so poorly educated and trained is why
(E) Many young recruits to the United States work force who are so poorly educated and trained explains why
I was guessing the correct construction was C, however, I was wrong. Can someone explain why A?
Source: GMAT Prep