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': 'At what age does a child attain a height of 100 cms? \nSelect and explain. \nA. 2 years, B. 3 years, C. 4 years, D. 5 Years', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C. 4 yearsApproximate anthropometric values by ageAGEWeight (kg)Length (cms)Head circumference (cms)Birth350346 Months6 (doubles)65431 year9 (triples)75462 years12 (quadruples)90483 years1595494 years1610050', 'role': 'assistant'}]