Personification I believe
In a business letter, the name in a salutation should be followed by a colon.
The salutation should read as follows:
Dear Mr. Smith:
The correct option is C.
From the sentence given above, it can be inferred that Sheralyn did not really like the idea that Dominic has a new sport car and she is probably feeling jealous of Dominic because of his car. When Dominic left the parking lot, Sheralyn was happy that people will no longer notice that Dominic has a new sport car.
So, Sheralyn was uttering the statement given in the question in order to express her strong feelings of jealousy but she said it in such a way that mask her true feelings.
