The Key Distinction Between a Factor of Production and an Input

The key distinction between a factor of production and an input is that:

A) an input is an enduring source of income,but a factor of production is used up in production.
B) a factor of production earns income from selling its services over and over again,but an input does not.
C) an input earns income from selling its services over and over again,but a factor of production does not.
D) a factor of production has limited earning potential.