In a Leadership Sense, There Is a Link Between Power

In a leadership sense, there is a link between power and leaders - what best describes the power by way of the capacity or potential to influence of leaders?

A) It is the absolute capacity of an individual agent to influence the behaviour or attitudes of one or more designated target persons at a given point in time.
B) It is the capabilities of individuals who could strike terror into the minds of foes and love in the hearts of friends in biblical terms.
C) It is the capability and capacity to get people to do things they otherwise would have done anyway.
D) It is the infinite incapacity of an individual agent to influence the beliefs or acts of one or more designated target persons at a given point in time.