Which of the following statements is true regarding power? a) a is said to have power over b if b controls something that a desires. b) the greater a's dependence on b, the greater a's power in the relationship. c) if a has the capacity to influence the behavior of b, then a is said to have power over b. d) a can have power over b only if a is b's leader. e) a can have power over b only when a and b have similar goals.