Which of the phrases given below the sentence should replace the phrase printed in bold type to make it grammatically correct? If the sentence is correct as it is, mark 'E' as the answer.
For some days the new professor lectured above the heads of his pupils.
A.
over the head of
B.
over the heads of
C.
on the heads of
D.
through the heds of
E.
No correction required
Correct answer is B
No explanation has been provided for this answer.
