The following are multiple choice questions (with answers) about medical knowledge.   **Question:** The best marker for neural tube defect is:   (A) Acetyl glucosonidase   (B) Acetyl cholinesterase   (C) Alpha fetoprotein   (D) Chorionic gonadotrophin
['(B) Acetyl cholinesterase <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Acetyl glucosonidase \n (B) Acetyl cholinesterase \n (C) Alpha fetoprotein \n (D) Chorionic gonadotrophin <> possible answers', '  The best marker for neural tube defect is: <> context@']