Sentence Correction

Some scholars who study Woolf's novel To The Lighthouse argue that each of the vacationers - Mrs. Ramsay, Mr. Ramsay, Lily, and Charles-is depicted not as a true character but rather as a caricature, even less developed than the simplest Ramsay child.

is depicted not as a true character but rather as a caricature, even

who are not depicted as true characters but rather caricatures and are even

are depicted, and they are not true characters but rather caricatures, but even

is depicted as not true characters but rather as caricatures, even

who is depicted not as a true character but rather as a caricature who is even

The correct answer is a.
"Each of..." should be followed by a singular verb. The enumeration of the characters is there to mislead the test-takers.
Answers b,c,d,e all contain mistakes related to subject verb agreement. In answer b the structure "as...as" is not correctly formed because the second "as" is missing. Answer c apart from the SVA mistake is also stylistically flawed and it changes the meaning. Answer e is unnecessarily wordy.

is the OA A? Kasia?

OA is A