A、Mother and daughter. B、Nurse and patient. C、Doctor and nurse. D、Teacher and student. A对话里的She是除了两位说话人之外的一个角色，男女二人正在讨论第三人的病情，因此

M: Can I have your arms? I’ll take your blood pressure. Apart from iron tablets, are you taking anything else?
W: Yes. For sleeping.
M: What are these pale patches on your cheeks?
W: They come from taking sleeping pills.
Q: What causes the patches of the woman’s face?

M: Well, I can’t find anything wrong with her. We’ll have a blood check but I think she knows herself what is wrong. It is obviously nervous tension that is upsetting her stomach.
W: I’ve been so worried about her. She’s an odd child. She’s so different in temperament from me.
Q: What’s the most probably relationship between the woman and She?