During blood transfusion, agglutination may occur when

A.

contrasting antigens reacts with contrasting antibodies

B.

similar antigens react with similar antibodies

C.

two different antigens react with each other

D.

two different antibodies react with each other

Correct answer is B

Agglutination is the process that occurs if an antigen is mixed with its corresponding antibody called isoagglutinin.