Sentence Correction

1. Only seven people this century have been killed by the great white shark, the man-eater of the movies-less than those killed by bee stings.
A movies-less than those
B movies-fewer than have been
C movies, which is less than those
D movies, a number lower than the people
E movies, fewer than the ones

OA E
Anyway, I'm gonna talk about the "have been" in option B. See another one,

2. A surge in new home sales and a drop in weekly unemployment claims suggest that the economy might not be as weak as some analysts previously thought.

A claims suggest that the economy might not be as weak as some analysts previously thought
B claims suggests that the economy might not be so weak as some analysts have previously thought
C claims suggest that the economy might not be as weak as have been previously thought by some analysts
D claims, suggesting about the economy that it might not be so weak as previously thought by some analysts
E claims, suggesting the economy might not be as weak as previously thought to be by some analysts

OA A
Slightly different from Option C in term "have been".

Is such parallelism wrong?