Atruck moves 60 kilometers east from point a to point b. at point b, it turns back west and stops 15 kilometers away from point a. what are the total distance and total displacement of the truck? a. the total distance is 105 kilometers, and the total displacement is 15 kilometers east. b. the total distance is 105 kilometers, and the total displacement is 45 kilometers east. c. the total distance is 60 kilometers, and the total displacement is 60 kilometers east. d. the total distance is 60 kilometers, and the total displacement is 45 kilometers east. e. the total distance is 105 kilometers, and the total displacement is 75 kilometers east.