Sales Personnel for Romertopf, a Manufacturer of Clay Cookware, Have

Sales personnel for Romertopf, a manufacturer of clay cookware, have been compensated in a variety of ways. In which of the following situations, if any, would a salary-only plan be most advisable?

A) Romertopf is going to expand its marketing area and create three new sales territories.
B) Romertopf's present sales personnel are not self-motivating.
C) A new line of microwavable clay pots requires little nonselling missionary work.
D) Romertopf's management is no longer able to supervise its sales force.
E) A salary-only is inappropriate in all of the above situations.