This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Growth, Development, and Behavior, Subject name: Pediatrics
[{'content': 'Vocabulary of a 2 year old child is? \nSelect and explain. \nA. 20 words, B. 50 words, C. 100 words, D. 200 words', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. (c) 100 wordsRef: Nelson's 18th ed ch: 32.2", 'role': 'assistant'}]