The correct option is A First information report
It is with the registration of an FIR that the police can begin their investigations into a crime. The law states that it is compulsory for an officer in charge of a police station to register an FIR whenever a person gives information about a cognizable offence. This information can be given to the police either orally or in writing. The FIR usually mentions the date, time and place of the offence, details the basic facts of the offence, including a description of the events.