Job Satisfaction Is Theorized to Decline When the Salesperson's Perception

Job satisfaction is theorized to decline when the salesperson's perception of his/her role is:

A) inaccurate in terms of the expectations of superiors.
B) characterized by conflicting demands among role partners that the salesperson cannot possibly resolve.
C) surrounded by uncertainty due to a lack of information about the expectations and evaluation criteria of superiors and customers.
D) all of the above.
E) (b) and (c) only.