A person is lifting a heavy box using a lever. What is the purpose of the lever in this situation?
A.) to reduce the energy needed to lift the box while keeping the direction of the force the same
B.) to reduce the energy needed to lift the box and change the direction of the force
C.) to reduce the force needed to lift the box and change the direction of the force
D.) to reduce the force needed to lift the box while keeping the direction of the force the same