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:

Hardly does the sun rise when the stars disappeared.

A have the sun rose

B had the sun risen

C did the sun rose

D the sun rose

E No correction required

ANS:B - had the sun risen

No answer description is available.