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': 'For Mrs Rekha, probability of having a baby of BW < 2500 gms is 0.50 and of having a BW 2500-2999 gms is 0.20. So the probability for Mrs. Rekha to have a baby of BW < 3 kg is \nSelect and explain. \nA. 0.3, B. 1, C. 0.1, D. 0.7', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Here, for Mrs Rekha, probability of having a baby of BW < 2500 gms, P(A) is 0.50 and of having a BW 2500-2999 gms, P(B) is 0.20\nThus, the probability for Mrs. Rekha to have a baby of BW < 3 kg is\nP(Total) = P(A) + P(B) = 0.50 + 0.20 = 0.70 (70%)\nThere is one more possibility, i.e. probability of having a baby of BW > 3 kg, whose probability P(C) will be 1 – (P(A) + P(B)) = 0.30 (30%).', 'role': 'assistant'}]