Regarding Sales Force Training

Regarding sales force training,

A) it is rarely necessary to take a successful and experienced sales rep out of the field for a training program.
B) every new sales rep should go through all parts of a firm's training program, so that nothing is missed.
C) training programs should focus on company policies and product information, since sales presentation skills are best learned in the field.
D) All of the above are true.
E) None of the above is true.