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.

The moment the manager came to know the fraudulent action of his assistant, he order immediately dismissed him.

A.

immediately ordered his dismissed

B.

ordered his immediate dismissal

C.

immediately order dismissal of his

D.

ordered for immediately dismissal of him

E.

No correction required

Correct answer is B

No explanation has been provided for this answer.