There are two key elements of designing and implementing supervision and training. What is one critical element and the most correct one? a. The supervisor has the responsibility to keep up with these advances in training. b. Supervision, unlike interventions, has a research evidence base. c. Specific disciplinary requirements are grounded in the principles of ABA. d. The supervisor is responsible and accountable for the record of what transpired, agreements and obligations, follow-up, evaluations of the supervisee, and all issues discussed