Given below are six sentences of a paragraph. Sentence A is the beginning whereas sentence F is the last sentence of the para. The middle four sentences are jumbled up. Select the option that gives their correct order forming a meaningful and coherent paragraph.

A. The first hour passed off quietly.

B. In the second, they had Arithmetic.

C. Swaminathan was terribly bored.

D. Vedanayagam went out and returned in a fewminutes in the role of an Arithmetic teacher.

E. He droned on monotonously.

F. His teacher’s voice was beginning to get on his nerves.