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

A O positive

B A positive

C B positive

D Cannot be determined on the basis of the given data

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Question

A married couple adopted a male child. A few years

Solution

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