Sentence Correction - Verbal and Reasoning

Directions to SolveWhich of phrases given below each sentence should replace the phrase printed inboldtype to make the grammatically correct? If the sentence is correct as it is, mark 'E' as the answer.
Q1:

Ramesh is as tall if not, taller than Mahesh.

A not as tall but

B not so tall but as

C as tall as, if not

D as if not

E No correction required

ANS:C - as tall as, if not

No answer description is available.