Drug Enforcement Agency Agents Heard Uncorroborated Information That a Dodge

Drug Enforcement Agency agents heard uncorroborated information that a Dodge mini-motor home that has been seen throughout town but is currently parked behind a shopping center, was being used by a person exchanging marijuana for sex. They watched Charles, who they know to live in a nearby apartment, accompanied by a juvenile, enter the motor home and then close the shades on all the windows. More than an hour later the juvenile left and the agents stopped and questioned him. The juvenile confirmed that he received marijuana for sex. Agents returned and knocked on the door. Charles came out. How are the courts most likely to view the search of the motor home by the agents at this time?

A) invalid without a warrant
B) invalid without the permission of Charles or a warrant
C) valid because of the consent of the youth
D) valid because the vehicle was mobile and not used as a residence