Joe has been late to work a significant number of times. As a result, Joe's supervisor calls him into her office to discuss his tardiness. After the meeting, Joe's behavior improves. When should Joe's supervisor give him positive reinforcement?

D$)$ Joe's supervisor should give him positive reinforcement the next morning that he arrives to work on time.

C$)$ If Joe's improvement continues, his supervisor should acknowledge it at Joe's next annual performance review.

A$)$ The supervisor should wait a month, and then tell Joe that she is pleased with his continuous improvement.

B$)$ It's not necessary to give positive reinforcement since Joe is now doing what he is supposed to do$.$