Aerial drones A. do not need a set route between locations and, instead, use computers, onboard sensors, and maps to navigate their environment. B. need markers and lasers for guidance. C. are used in warehouses for inventory management by using a combination of computer vision technology, AI, and inventory sensors. D. transport inventory around the warehouse by using sensors to identify magnetic stripes or tracks to guide them and are loaded with a map of the warehouse with locations of the inventory