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: Pediatrics
Vocabulary of 1.5 year old child is - 
Select and explain. 
A. 1-10 words, B. 10-20 words, C. 20-30 words, D. 30-40 words
B: 10-20 words
Answer: B: 10-20 words 
Explanation: Ans. is 'b' i.e., 10-20 words