The police have probable cause to believe that an individual committed murder in violation of federal law. the police seek and receive a warrant to search the individual's apartment to look for the murder weapon — in this case, a knife. the warrant is signed by a judge. the warrant stipulates that the police may search the apartment at any time on or after the date the warrant was signed. the police wait 24 months and then execute the search warrant. did the search comply with the warrant requirement?

a. yes, because the warrant was signed by a judge in advance of the search
b. no, because a warrant to search a home must be issued by an appeals court.
c. yes, because warrants are not required to specify a time period for the search.
d. no, because warrants must specify a time period for their execution