Which one of the following statements is correct?
The Director General may grant to an officer of the CISF a higher rank than the one held by him, as a local rank, whenever considered necessary by him in the interest of better functioning of the CISF.

The correct statement is Option C. The provisions regarding the grant of local ranks are governed by Rule 14 of the CISF Rules, 2001.

• Rule 14(2)(b) explicitly states that an officer who has been granted a local rank "shall not be entitled to any extra pay and allowances for holding such rank."
• Rule 14(3) specifies that the grant of such local rank is subject to confirmation by the Central Government, which makes Option A incorrect.
• Rule 14(1) empowers the Director General to grant local rank up to and including the rank of Commandant. Since Senior Commandant is a higher rank in the CISF hierarchy, Option B is incorrect.
• The rules do not contain any provision allowing the Director General to delegate this specific statutory power to an Additional Director General, making Option D incorrect.