This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pediatrics
[{'content': 'Bilabial consonants are \nSelect and explain. \nA. P, B, 9, B. P, B, M, W, C. M, L, W, D. T, L, M, W', 'role': 'user'}, {'content': "Answer: B \nExplanation: Pronounced or aiculated with both lips, as the consonants b, p, m, and wBaby stas producing bilabial words by the 4th month of age(Refer: OP Ghai's Textbook of Pediatrics, 8th edition, pg no. 32)", 'role': 'assistant'}]