Marta can't attend the event so she writes her excuse to David.
Which of the following may be her reply?
A) Thanks for your nice invitation and I’d like to be there, I have to go abroad at that time.
B) You are so kind to invite me and I'm sure I'd be there at that time. I’m looking forward to see you again.
C) Absolutely I will be there and I’d be happy to be with my ex-classmates.
D) I’m afraid I can’t. Maybe another time. I’m sorry.