A married couple adopted a male child. A few years later, twin boys were born to them. The blood group of the couple is AB positive and O negative. The blood gr

Question

A married couple adopted a male child. A few years later, twin boys were born to them. The blood group of the couple is AB positive and O negative. The blood group of the three sons is A positive, B positive, and O positive. The blood group of the adopted son is?

Accepted Answer

(A) O positive

Answer

(B) A positive

Answer

(C) B positive

Answer

(D) Cannot be determined on the basis of the given data