Your answer would be A.
I used D and got it wrong but when i checked it was A
Here is the proof have a nice day!!
I believe the answer is A.
Hope this helps!
Answer: Pretty sure it's A.
Explanation: To me, the others make no sense. The dialogue needs to be encased with quotations on either side, so it's definitely not C, the comma wouldn't be in the quotations, so it's not B, and D just doesn't look right. Sorry if I'm wrong, but I think it's A.