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.

We were still standing in the queue when the film was beginning.

A.

film began

B.

film had begun

C.

beginning of the film was over

D.

film begins

E.

No correction required

Correct answer is B

No explanation has been provided for this answer.