Explanation:

- Option 1: The police officer should not fall in the category of sub-section (1 A) of Section 25 Cr. PC.

- This option is not typically relevant to the criteria regarding appointment.

- Option 2: The police officer has been a part of the investigation of the offence in any way.

- Involvement in the investigation creates conflict of interest, prohibiting appointment.

- Option 3: The police officer is below the rank of an Inspector.

- Typically, minimum rank requirements are set to ensure experience level.

- Option 4: Both (B) and (C)

- ?? Correct Answer: A police officer cannot be appointed as an Assistant Public Prosecutor if they have been part of the investigation or are below the rank of an Inspector.