Answer:
Ask your parents. Follow what you believe if you're really faithful to it. If not I'd say do what you want.
The lever is a movable bar that pivots on a fulcrum attached to a fixed point. ... It shows that if the distance a from the fulcrum to where the input force is applied (point A) is greater than the distance b from fulcrum to where the output force is applied (point B), then the lever amplifies the input force.
pulley is a wheel on an axle or shaft that is designed to support movement and change of direction of a taut cable or belt, or transfer of power between the shaft and cable or belt.
The answer is B, the NDC is a 10 digit number, in 3 segments. It's a universal product identifier for human drugs in the U.S. I hope this helps
