During a Year-End Meeting, the Principal Asked Mark Steinberg How

During a year-end meeting, the principal asked Mark Steinberg how he would assess his performance as a teacher over the past year. What would be the strongest answer from Mark?

A) "My students like my class. In fact, they tell me they enjoyed my class better than any other."
B) "My department chairman told me that I have a fine future ahead of me based upon this year of teaching."
C) "Other members of the department frequently ask if I'll share my lesson plans and unit evaluations with them."
D) "I've just finished reviewing my students' cumulative folders. Generally, their problem-solving abilities have increased."