Often Employees Do Not Use the Skills They Learned in a Training

Often employees do not use the skills they learned in a training session once they go back to their job.This may occur because

A) supervisors may not support the application of skills learned in training.
B) they encounter many opportunities to apply their new skills on the job.
C) training sessions are always too short and do not allow for enough time to practice the new skills.
D) the organization failed to implement a pretest-posttest design.