Each set of the following sentences comprises four alternatives labelled as 'A','B','C', and 'D'. Candidate is required to select the most suitable alternative which conveys the exact meaning in accordance with the correct grammatical rules.

Options

A. The teaching staff must take their lectures regularly when are asked by the principal.
B. The teaching staff would have taken lectures regularly had they known that the Principal would know about it.
C. The teaching staff had taken the lectures regularly had they known that the Principal would come to know about it.
D. Many irregularities were found in their lectures by the Principal and he could not be disregarded them.

Answer

B