In Knowles V

In Knowles v. Iowa , concerning an instance where a driver had been given a citation for speeding but had not been arrested, SCOTUS held that: ​

A) the officer issuing the citation could still do a search incident to arrest.
B) the same concern for officer safety that was present in a full custodial arrest situation was present in every traffic stop. ​
C) police could not automatically do a search incident to arrest when only a citation is involved.
D) police could automatically do a search of the driver's person, but not of the vehicle.