Ifsomeoneinvitesyoutogotohisparty,butyouhavenotime,whatshouldyouno

If someone invites you to go to his party, but you have no time, what should you not say?__________A.Sorry, I can’t. I have to study for a testB.Sorry, I’m visiting my auntC.I’d love to ,but I have no timeD.No, thanks