Agents from the Laredo South Station received a report of an individual lost east of the city. The disoriented individual had been abandoned by the group with which she was traveling. Agents were dispatched to the area and quickly located the individual. From the information given above, it can be validly concluded that A) no one who was aided by Border Patrol Agents from Laredo Sector was lost B) no one who was lost was unaided by Border Patrol Agents from Laredo Sector C) at least one person who had been abandoned by the group with which she was traveling was not lost D) at least one person who was aided by Border Patrol Agents from Laredo Sector was not lost E) at least one person who was lost was not left unaided by Border Patrol Agents from Laredo Sector