Under section 41 of the Code of Criminal Procedure, 1973, whom among the followings, Police cannot arrest without warrant?

Section 41 CrPC - When police may arrest without warrant—(1) Any police officer may without an order from a Magistrate and without a warrant, arrest any person— (a) who commits, in the presence of a police officer, a cognizable offence; (b) against whom a reasonable complaint has been made, or credible information has been received, or a reasonable suspicion exists that he has committed a cognizable offence punishable with imprisonment for a term which may be less than seven years or which may extend to seven years whether with or without fine The question talks about when police cannot arrest without warrant.