the answer is: E. The police violated Sam's Fourth Amendment rights.
The fourth amendment protect the united citizens from 'unreasonable searches and seizures'.
The only time the police department can conduct a search in private property without a warrant is only if the Police received a 911 call from that private property, hearing screams or gunshots, or directly saw a criminal get into the property.
In the case, the police did not face any of those situations and still conducted a search without warrant. Which is why the police's action is considered as unreasonable searches and seizures.