A stock person at the local grocery store has the job of: 1) picking up boxes of tomatoes from the stockroom floor,
2) accelerating to a comfortable speed,
3) Carrying the boxes to the tomato display at constant speed,
4) decelerating to a stop, and
5) lowering the boxes slowly to the floor.
During which of the five segments of the stock person's task is positive work being done on the boxes?
A. 1 and 5
B. 1
C. 1, 2, 4 and 5
D. 1 and 2
E. 2 and 3