单项选择题

M: Hi, good morning, Sarah.
W: Good morning. Dr. Lee.
M: What is the matter with you
W: I feel dizzy. And I have a headache.
M: How long have you been like this
W: About a week.
M: I will give you a physical examination.

What is the matter with Sarah()

A. She gets a stomachache.
B. She has pain in the chest.
C. She has a headache.
D. She feels sick.