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: Dental
By what age a child can hold the film: 
Select and explain. 
A. 1 year, B. 2 year, C. 3 year, D. 4 year
C: 3 year
Answer: C: 3 year 
Explanation: <3 year parents hold the film.
Above 3 years child can hold.