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': 'Rideal Walker test is used to determine the efficiency of the \nSelect and explain. \nA. Disinfectant, B. Moist heat sterilisation, C. Antibiotics, D. Dry heat sterilization', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]