According to the Textbook, Which of These Is the BEST

According to the textbook, which of these is the BEST example of training?

A) While chatting over coffee, Juanita lets Tracy know that in order to get ahead in the workplace, she should try to play golf with her supervisor.
B) Calvin gives his employee low ratings on a performance appraisal and asks that employee to meet with him to set some goals for the next performance appraisal.
C) Lester watches a presentation that tells him more about his company's products so that he can sell them more effectively.
D) Anya quizzes her employees to learn what facts about the company's products they tend to misunderstand.