Several years after Tim Cook took over as CEO, Apple had a phenomenal

year in which its stock price increased by 65 percent and the company's market value became the largest ever of any U.S. firm. What does this say about the success of Cook's leadership, particularly as compared to Steve Jobs'?


a. Cook is a more successful leader than Jobs in terms of driving revenue.
b. Jobs was a more successful leader than Cook in terms of driving revenue.
c. Cook is a more successful leader than Jobs in terms of product innovation.


or


d. It is too early to reach any conclusions, since Apple's sales still reflect Jobs' influence.