Which of the following statement(s) is/are true?
1. Children bite their nails as it comforts them.
2. Children bite their nails when they are bored.
3. Slapping the children can help with nail biting.
4. Stopping nail biting is not required as it is not a major problem.

A. Only 1

B. Only 3

C. Both 1 and 2

D. None of these

Answer: Option C