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: Social & Preventive Medicine
[{'content': 'Which fungicide is used as a spray for the control of bagassosis - \nSelect and explain. \nA. 2% acetic acid, B. 2% fonnic acid, C. 2% propionic acid, D. 25% phenyl mercury', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., 2% Prnpionic acid", 'role': 'assistant'}]