O$.$J$.$ Simpson's Ford Bronco was parked on the street outside his home during the time that officers were investigating his ex$-$wife's murder. Did law enforcement need a warrant to search the locked vehicle?

a$.$ No$,$ Simpson abandoned his right to privacy when he parked on the street.

b$.$ No$,$ Simpson was a person of interest in the investigation, so he had a diminished expectation of privacy.

c$.$ Yes, law enforcement officers need to get a search warrant for every car they search.

d$.$ Yes, because Simpson had a reasonable expectation of privacy when he parked $($and locked$)$ his car.