What principal of a lever is being used in this photograph?

A.
A bottle opener is a type of lever that magnifies the output force required.

B.
A bottle opener is a type of lever that reduces the input force required by reducing the distance over which the force is applied.

C.
A bottle opener is a lever in which a smaller input force acts over a larger distance so that a larger output force can act over a smaller distance.

D.
A bottle opener is a type of lever that enables the same work to be done over a shorter distance with less force.

Question

What principal of a lever is being used in this photograph?  
  

 
 A.
A bottle opener is a type of lever that magnifies the output force required.
 
 B.
A bottle opener is a type of lever that reduces the input force required by reducing the distance over which the force is applied.
 
 C.
A bottle opener is a lever in which a smaller input force acts over a larger distance so that a larger output force can act over a smaller distance.
 
 D.
A bottle opener is a type of lever that enables the same work to be done over a shorter distance with less force.

anonymous · Answer

http://static.k12.com/calms_media/media/1473000_1473500/1473258/2/3a30ef557b66c434cfd71485b66f17225db08229/SHU_58802875_bottle_can_opener_E.jpg