Select the option that expresses the given sentence in indirect speech.
My friend Ganesh said, “I could solve the biggest problem very easily.”

A

My friend Ganesh said that he could solved the biggest problem very easily.

B

My friend Ganesh said that he can solve the biggest problem very easily.

C

My friend Ganesh said that he would solve the biggest problem very easily.

D

My friend Ganesh said that he could solve the biggest problem very easily.