At U$.$S$.$ Customs and Border Protection $($CBP$),$ all CBP officers and Border Patrol Agents who form part of canine teams receive training and certification in all aspects of canine behavior. Likewise, all dogs who form part of these teams are taught to detect concealed humans and the odors of controlled substances such as cocaine, heroin, or methamphetamine.

From the information given above, it CANNOT be validly concluded that

A$)$ any person who is not trained in all aspects of canine behavior cannot be a CBP officer or Border Patrol Agent who forms part of a CBP canine team

B$)$ at least some dogs who are trained to detect odors of controlled substances would not be excluded from being part of a CBP canine team

C$)$ some individuals who receive training in all aspects of canine behavior are CBP Officers$/$Border Patrol Agents who form part of CBP canine teams

D$)$ any CBP Officer or Border Patrol Agent who has been trained in all aspects of canine behavior will form part of a canine team

no CBP Officer or Border Patrol Agent who is a member of a canine team is exempted from receiving training in all aspects of canine behavior