Flowers for Algernon

Read the excerpts from "Flowers for Algernon."

We had a lot of fun at the factory today. Joe Carp said hey look where Charlie had his operashun what did they do Charlie put some brains in. I was going to tell him but I remembered Dr Strauss said no. Then Frank Reilly said what did you do Charlie forget your key and open your door the hard way. That made me laff. Their really my friends and they like me.
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I didn't know what to do or where to turn. Everyone was looking at me and laughing and I felt naked. I wanted to hide. I ran outside and I threw up. Then I walked home. It's a funny thing I never knew that Joe and Frank and the others liked to have me around all the time to make fun of me.
What conclusion can be drawn about Charlie based on his description of the events in these passages?

A. He becomes too trusting of other people’s motives after the operation.
B. He no longer wants to connect with others as he becomes smarter.
C. He no longer cares if other people like him after the operation.
D. He better understands the behavior of others as he becomes smarter.

PLease help me