Explanation:

- Option 1: Section 310A

- There is no Section 310A in the Criminal Procedure Code, 1973.

- Thus, this option is not valid in this context.

- Option 2: Section 311A

- Section 311A was indeed inserted by the Criminal Procedure (Amendment) Act, 2005.

- This section empowers a magistrate to order a person to give their specimen signature or handwriting.

- Option 3: Section 312A

- There is no Section 312A in the Criminal Procedure Code, 1973.

- Therefore, this is not the correct option.

- Option 4: Section 313A

- There is no Section 313A in the Criminal Procedure Code, 1973.

- Hence, this option is irrelevant.

Correct Answer: Option 2 - Section 311A