In respect of investigation as provided under section 2(h) of Criminal Procedure Code, which of the following is incorrect

Answer: Option C

Section 2(h) of the Code of Criminal Procedure (CrPC) defines "investigation" as the process of collection of evidence by a police officer or any person authorized by a Magistrate.

So, both options A and B are correct:
A. Investigation can be conducted by a police officer.
B. Investigation can be conducted by any person authorized by a Magistrate.

Option C is incorrect:
Investigation cannot be conducted by a Magistrate himself. A Magistrate is responsible for judicial functions and decision-making, and the investigation is generally carried out by police officers or persons authorized by a Magistrate.