Denny : Mr. Hendra, I`d like you to come to my birthday party next Sunday.
Mr. Hendra : That`s very kind of you, but I`m afraid I can`t. I have already made an appointment. Have a nice party.
The underlined sentence in the dialog above is.
a.An apology
b.An invitation
c.A large taking
d.A greeting
e.Agreement​