Over the past decade, the average number of seats added to a manufacturer’s most popular model of jet was greater
than what the jet manufacturing industry average did for this period, but their seat width and legroom area shrank faster than other manufacturers.
A) than what the jet manufacturing industry average did for this period, but their seat width and legroom area shrank faster than
B) than the jet manufacturing industry average for this period, but seat width and legroom area shrank faster for this manufacturer than for
C) as compared to the jet manufacturing industry average for this period, but seat width and legroom for it shrank faster than with
D) as compared to what the jet manufacturing industry average had been for this period, but seat width and legroom for this manufacturer shrank faster than did
E) as compared to the jet manufacturing industry average for this period, but its average seat width and legroom shrank faster than they did for
Source: Ready4GMAT