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
A child can ride a tricycle, copy a circle and knows age sex by the age of – 
Select and explain. 
A. 30 months, B. 42 months, C. 36 months, D. 48 months
C: 36 months
Answer: C: 36 months 
Explanation: None