This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
[{'content': 'Indirect coomb’s test detects \nSelect and explain. \nA. Incomplete antibody bound to RBC, B. Free antibody, C. Free agglutinable RBCs, D. None of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Direct coomb’s test detects antibodies bound to RBC.\nIndirect coomb’s test detect free antibodies.', 'role': 'assistant'}]