Which of the following are examples of the predominant categories of the air cargo industry? Group of answer choices (A) Unregulated airlines and private pilots that carry significant amounts of interstate cargo on a cash-only basis (B) Heavy freighters that often focus on long-haul international trips and large, heavy freight (C) Integrators that often focus on next-day, small package delivery and the frequent use of ground transportation/trucking (D) Flying boxcars operated as drones for low-cost cross-border shipments (E) Answers A and D (F) Answers B and C