Which client has the highest risk of ovarian cancer ？（）

A．30-year-old woman taking oral contraceptive pills.

B．45-year-old woman who has never been pregnant.

C．40-year-old woman with three children.

D．36-year-old woman who had her first child at age 22.

下列哪项不属于医源性疾病的范围

A．药源性疾病

B．药物不良反应

C．意外中毒

D．医院内感染

E．药物引起的营养性疾病