Using technology as new as space-age fabrics and as ordinary as common dry-cleaning chemicals, scientists and historians, in their attempt at cleaning and preserving the American flag that flew over fort mchenry in Baltimore in 1814, are hoping that it will then last another 200 years.
A.and as ordinary as common dry-cleaning chemicals, scientists and historians, in their attempt at cleaning and preserving the American flag that flew over fort mchenry in Baltimore in 1814, are hoping
B.and as ordinary as common dry-cleaning chemicals, scientists and historians are attempting to clean and preserve the American flag that flew over fort mchenry in Baltimore in 1814,hoping
The Answer is B. But B changed the meaning of the original sentence. "Hoping" was changed to be the verb of the sentence instead of an adv.
In what kind of condition, the original meaning of the sentence should be changed?
If I change A to be "attempting to clean and preserve...", is A right?