单项选择题
M: Hi, Susan, Where were you at lunch time
W: Oh, sorry to miss you. But my thirst for knowledge was greater than my stomach for food.
M: I never have that problem. So where were you
W: My science class ran over.
A. She tried to solve the problem.
B. She had a chat with her classmate.
C. She stayed at the classroom.
D. She had lunch in the cafeteria.