The answer is: A
Explanation
The correct option is A: Where a police officer may arrest without warrant.
As per section 2(c) of the Code of Criminal Procedure, 1973, a cognizable offence means an offence for which, and a cognizable case means a case in which, a police officer may, in accordance with the First Schedule or under any other law for the time being in force, arrest without warrant. This means that the police officer has the power and duty to arrest the person who is accused or suspected of committing a cognizable offence, without obtaining a prior warrant from a magistrate. Cognizable offences are generally serious offences that are punishable with imprisonment for more than three years or death. Some examples of cognizable offences are murder, rape, robbery, theft, etc.