Which Statement Is Most Consistent with Muraven and Baumeister's (2000)

Which statement is most consistent with Muraven and Baumeister's (2000) theory of self-control?

A) Self-control is a limited inner resource that can be temporarily depleted by usage.
B) Exerting self-control in one situation makes it easier to exert control on a subsequent occasion.
C) People have many inner sources of self-control from which they can draw.
D) Self-control is simply an illusion used to maintain a positive self-image.