Marty was driving his auto on a public street of Duffyville on his way home from a party. His wife, Dolly, occupied the passenger seat. Two police officers, Dragby and Casey, noticed that Marty's car was weaving and generally being driven in an erratic manner. They pursued the vehicle and curbed it. When Marty emerged from the driver's seat, he was obviously inebriated, and the officers wrote out a drunk driving citation, and insisted that Marty accompany them to the station house. Marty accompanied Casey in the squad car, and Dragby drove Marty's car to the local precinct with Dolly in the passenger seat. Dolly walked into the station house with Marty. As Marty was being booked, Dragby took a standard police search form with him and began searching the car. Beneath the passenger seat he found Dolly's purse. He opened the purse and found a plastic zip-lock bag containing a small amount of marijuana. Dolly was charged with possession of drugs. At Dolly's trial, her attorney moved to suppress the admission of the marijuana seized from Dolly's purse into evidence. Should the court rule favorably on the motion?
A. Yes, because when conducting a search incident to an arrest the police may not open a closed container. 
B. Yes, because the police lacked probable cause to search Dolly's purse.
C. No, because the search was incident to the lawful arrest of Marty.
D. No, because the marijuana was discovered during the course of a valid inventory search.
Choose A, B, C or D as your solution.
B