The following are multiple choice questions (with answers) about medical knowledge.   **Question:** MHC antigens are absent on?   (A) Platelet   (B) Erythrocyte   (C) Neutrophil   (D) Monocyte
['(B) Erythrocyte <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Platelet \n (B) Erythrocyte \n (C) Neutrophil \n (D) Monocyte <> possible answers', '  MHC antigens are absent on? <> context@']