Answer:
I believe it is C.
Explanation:
For the option A, look at the end of the sentence. The "!" should be inside the speech mark.
Now, let's look at option B. The "?" should be inside the speech mark, as it is written as a question. Like this:
"What did he die of?", asked my friend.
In conclusion, option C is the correct one.
I hope it helps.
