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:

The prosecution failed in establish in every case today.

A to

B on

C as

D upon

E No correction required

ANS:A - to

No answer description is available.