I believe the answer would be C, however I read it last year and my memory sucks<span />
Answer:
Thank You Sir You are Good.
B. You can be used as both. Here is an example. "You said you wanted this bear, so I got it for you." You is used as both a subject and object pronoun.
If you're trying to write a story that "ends with the words: How wrong he was" you may want to make the story about some kind of stance you make that he disagrees with. You could choose any topic that usually creates tension between people, such as politics or the environment.
The answer to the question would be letter d. I hope this helps. :)