Sefchick and his Wife own a car jointly, and both names appear on the car's title. Sefchick and the Wife separate, and the Wife keeps possession of the car. One night, Sefchick goes over and takes the car without the Wife's permission. She calls the police to report it stolen. What crime if any has been committed?
a) Grand Theft Auto
b) Unauthorized Use of a Vehicle
c) Joyriding
d) Trespass to Chattel