In the following question, a sentence has been given in Direct/Indirect speech. Out of the four alternatives suggested, select the one, which best express the same sentence in Indirect/Direct speech.
Puneet said, "I have been reading a story book".

A

Puneet said he has been reading a story book.

B

Puneet said that he had been reading a story book.

C

Puneet said that he has been reading a story book.

D

Puneet said that he had read a story book.