Which of the following statements is true about BST? a. The trainer should provide a lengthy, oral description of the target skill to the trainee. b. The trainer should provide a succinct, oral description of the target skill to the trainee. c. The trainer should provide a lengthy, written description of the target skill to the trainee. d. The trainer should provide a succinct, written description of the target skill to the trainee. e. There is no need for the trainer to provide any description of the target skill to the trainee prior to the demonstration of target skill