Section 159 of Criminal Procedure Code empowers the Magistrate:

A. To restrain police investigation and order magisterial inquiry when the investigation of a cognizable offence by the police is already in process

B. To order magisterial inquiry into a cognizable offence only in those cases in which the police decides not to investigate the case

C. To order magisterial inquiry into a cognizable offence where the investigation by the police is already in process

D. Either A or B or C

Answer: Option B