Zach Was Stopped Around 11:00 P

Zach was stopped around 11:00 p.m. on Saturday night at a roadblock the police had established on a city street to check for drivers who were under the influence of alcohol. As Officer Williams approached Zach's car she used her flashlight to look into the car and observed what appeared to be a machinegun on the back seat. She ordered Zach out of the car and arrested him. Officer Williams placed Zach in the backseat of her patrol car. She then searched Zach's car and found a bag of counterfeit $20 bills under the driver's seat and a box containing ten stolen iPods in the trunk. Will the counterfeit $20 found under the driver's seat be admissible as part of a search incident to arrest?

A) Yes, an officer is allowed to search the passenger compartment whenever the driver of the car is arrested.
B) Yes, the $20 bills were counterfeit and illegal to possess under all circumstances.
C) No, Zach could not have reached into the car at the time Officer Williams searched it and they were unrelated to the weapons charge.
D) No, the $20 bills were not evidence that Zach was driving under the influence of alcohol.