Select the option that expresses the given sentence in reported speech.
I said, “I took a lot of precautions after my surgery.”

A

I said that I have taken a lot of precautions after my surgery.

B

I said that I had taken a lot of precautions after my surgery.

C

I said that I will take a lot of precautions after my surgery.

D

I said that I took a lot of precautions after my surgery.