A leader's use of power can influence his or her overall effectiveness as a strategic manager. Which of these statements is true? a. Edward Wrapp says that effective leaders should use their power in a dictatorial fashion to ensure team members understand who the final decision maker is. b. Jeffrey Pfeffer explains that ultimately a manager's power comes from his or her control over resources, such as budgets, capital, positions, information, and knowledge. c. Jeffrey Pfeffer believes that only those with a title and official position can exert power within an organization. d. Edward Wrapp argues that organizational leaders do not have anything in common with political leaders and should not behave democratically