What Does Skill Variety Refer To

What does skill variety refer to?

A) The extent to which a job requires an individual to perform a wide range of tasks on the job
B) The extent to which a job requires an individual to use a variety of different skills to perform a job
C) The extent to which a job involves performing specialized tasks or possessing specialized knowledge and skill
D) The extent to which the tasks on a job are complex and difficult to perform
E) The extent to which a job requires an individual to learn to perform a variety of tasks