If a person has AB- blood, who all can donate blood to him?

Q. If a person has AB- blood, who all can donate blood to him?

A.            A+ , B-, O -, AB+

B.            A-, B -, O+, AB+

C.            A+, B+, O+, AB-

D.            A-, B-, O-, AB-

Answer: A-, B-, O-, AB+