What distinguishes first class levers from both second and third class levers?

AThe fulcrum is between the load and effort.
BThere is a fulcrum on both sides of the load.
CGreater effort is required to move the load.
DThe first class lever is not found in the human body

Verified Answer :

In the first class lever the fulcrum is located between the effort and the resistance.In second class lever The second class of lever has the fulcrum at one end, the effort applied at the other end, and the resistance somewhere between those points. [ The third class of levers has the fulcrum at one end of the lever, and the weight or resistance to be overcome is at the other end, with the effort applied at some point between. ]

Answer:

A. the fulcrum is between the load and effort

Explanation: