Mark the letter A, B, C, or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges.
Nobita and Doremon are in front of the classroom.
 Nobita: “ Sorry, I forgot to phone you yesterday.”
 Doremon: "____________” 
A.I have nothing to tell you.
B.Never mind!
C.You’re welcome.
D.Oh, poor me!