A donation card is executed and verified and handed over to the payee. The payee has accepted the donation. Before the registration of the deed, the donor wishes to revoke the donation. Advise the payee-

• A. Donation can be revoked because it was not registered
• B. Donation is not complete, so can be revoked
• C. Donation is complete, deed may be registered later
• D. Must wait till registration is done