With a valid search warrant based on probable cause that Peter Greyjoy was storing $20,000 worth of illegal ecstasy in his house, Iron Island Police Officers went to Peter's house. Prior to entering, the police did not "knock and announce" their presence. At a subsequent suppression hearing, Peter's attorney argues that the police were required to knock and announce their presence before entering Peter's home. That statement of the "knock and announce" rule is:

Group of answer choices

A. Incorrect because the police are not required to knock and announce if they have a valid warrant based on probable cause

B. Incorrect if the police had reasonable suspicion that the illegal ecstasy was in a locked container

C. Correct because the police can never enter a house without complying with the knock & announce rule

D. Correct if Peter's attorney can show that the Iron Islands police did not have probable cause to believe the ecstasy would be destroyed