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': 'If the prevalence of blindness in a population is 0.005, and prevalence of deafness is 0.001, the total prevalence of deafness and blindness together is: \nSelect and explain. \nA. 0.000005, B. 0.00005, C. 0.006, D. None of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: By the law of multiplication of probability, when two events are not mutually exclusive, the total probability is obtained by multiplying the individual probabilities. P(deafness and blindness)= P(deafness)x P(blindness)= 0.005x0.001=0.000005 Ref: Medical biostatistics, 1st edition pg: 191', 'role': 'assistant'}]