What Was the Significance of the Supreme Court Overturning the State

What was the significance of the Supreme Court overturning the State Supreme Court's findings in Florida v. Harris (2013) ?

A) The Court found that the use of properly trained K-9 units to detect drugs warrants probable cause when the dogs alert to drugs on a person or property.
B) The Court overturned the State Supreme Court's ruling, which was that public school administrators have the right to search student lockers because the lockers are school property and any expectation of privacy is thus ignored.
C) The Court found that the use of undercover informants is admissible in court as long as the informants have not been paid to provide evidence.
D) The Court overturned the State Supreme Court's ruling, which was that police officers may not use smell to assume probable cause when detecting the use of marijuana in public settings.