Dabir returned a pair of sunglasses to a store. His receipt showed -$42.79 at the bottom. Which of these statements must be true?

A. Dabir will see a charge of $42.79 on his credit card statement.
B. Dabir paid the clerk $42.79 when he made the return.
C. Dabir was refunded a little more than $42.
D. Dabir was refunded a little less than $42.

Sorry to Bother, but I need help.