Which of these strategies can be employed to test training effectiveness? (Choose THREE.)

A.
Create a survey for managers, to see if participants practice behaviors presented during training.

B.
Provide feedback forms for employees to rate instruction and training material, immediately after training has ended.

C.
Include auditors before and after the training. This checks to see if the number of security-related incidents is reduced, because of the training.

D.
Give incentives to employees who attend security-awareness training. Perform spot-checks, to see if incentives are displayed.

E.
Test employees on security concepts several months after training has ended.