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': 'Criteria for slaughter house ? \nSelect and explain. \nA. Glass area should be 25% of floor area, B. Window ledes sloped 25deg, C. Doorways 1 meter high, D. None of the above', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Forcing of knowledge into mind", 'role': 'assistant'}]