In some instances, defense mechanisms can be helpful. Which is an example of compartmentalization being used effectively?

A. Lionel's father has cancer, but Lionel refuses to think about that while he finishes his homework.
B. Amelia is struggling with her Spanish class, so she decides to drop the class and take French instead.
C. Derrick is a very neat person by nature, so he prefers that everything in his room be organized.
D. Ling has had a hard time coping since her mother died and does her best not to think about her mother.