Please answer quick

A box on a ramp is connected by a rope to a winch*. The winch is turned so that the box moves down the ramp at a constant speed. The box experiences kinetic friction with the ramp. Which forces on the box do negative work as the box moves down the ramp? (Assume all the forces on the box are external forces. If there is more than one, you must select all of them. If there are none, select the option that says "None".) *From Wikipedia: "A winch is a mechanical device that is used to pull in (wind up) or let out (wind out) or otherwise adjust the tension of a rope". Weight (gravitational force) Normal force Kinetic friction force Tension force None