The commerce department announced that the economy grew during the second quater at a 7.5 percent annual rate, while the inflation eased when it might have been expected for it to rise.

A) it might have been expected for it to rise
B) it might have been expected to rise
C) it might have been expected that it should rise
D) its rise might have been expected
E) there might have been an expectation it would rise

OA is B. But I couldn't understand what is the problem with choice D.

Thanks,
Aishwary

The main issue here is lack of parallelism. 'Inflation' is a plain noun - and we're continuing to talk about inflation - so it's most logically parallel to continue the sentence in a manner that continues to address 'inflation' itself (or the equivalent pronoun 'it', which is what the correct answer does). Choice D unnecessarily switches the subject to 'its rise', creating a nonparallel construction that's also (arguably) more difficult to understand.