Two men, X and Y, each attempt to move identical heavy boxes, P and Q. Man X tries to push box P across the floor, but the box stays still because something blocks its path. Man Y raises box Q from the floor up onto a shelf. Which man does the greatest amount of work on his box, and which box receives the greatest increase in energy?
- AX, P
- BX, Q
- CY, P
- DY, Q