With more than $42,000$ U$.$S$.$ Customs and Border Protection $($CBP$)$ Officers and Border Patrol Agents along the nearly $7,000$ miles of land border and $328$ ports of entry, CBP is uniquely positioned to deter and disrupt human trafficking. Officers and Agents on the border and at the ports of entry are usually the first law enforcement officers that victims will encounter. Through an online course and mentoring from senior Officers and Agents in the field, CBP trains all its frontline law enforcement personnel to recognize the signs of human trafficking and to determine the immediate actions that are necessary to protect the innocent.

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

A$)$ no member of the CBP frontline law enforcement personnel lacks the necessary training to recognize signs of human trafficking

B$)$ sometimes the first encounter with law enforcement personnel experienced by victims of human trafficking is with CBP Officers$/$Agents at the Border or at Ports of Entry

C$)$ any person who is trained to recognize signs of human trafficking must from part of the CBP frontline law enforcement personnel

D$)$ some CBP frontline law enforcement Officers$/$Agents are not persons who lack training in recognizing signs of human trafficking

E$)$ frequently, the first encounter by victims of human trafficking with law enforcement personnel at the border is not with personnel outside the ranks of CBP Officers$/$Agents