The correct answer is: A. Commissioner of Police
A Commissioner of Police is the head of the police force in a big city in India. They are responsible for the law and order in the city and for ensuring the safety of its citizens. They are also responsible for the investigation of crimes and the prosecution of criminals.
An Inspector General of Police is a senior police officer who is in charge of a group of districts or divisions. They are responsible for the overall supervision of the police force in their area and for ensuring that the police are carrying out their duties effectively.
A Deputy Inspector General of Police is a senior police officer who is in charge of a district or division. They are responsible for the day-to-day running of the police force in their area and for ensuring that the police are providing a good service to the public.
None of the above is not the correct answer.