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.
I said, "My grand­father snored throughout the night."

A

I said my grand­father had snored throughout the night.

B

I said that my grand­father snored throughout the night.

C

I said that my grand­father had snored throughout the night.

D

I said that my grand­father had been snoring throughout the night.