A nurse is conducting health promotion education regarding contraindications to combination oral contraceptive use to a group of women. Which of the following conditions should the nurse include in the teaching?

A. Renal calculi are not affected by hormonal contraception. B. Fibrocystic breast disease is not a contraindication. C. Hypertension is a contraindication because oral contraceptives increase the risk of stroke and thromboembolism. D. Fibromyalgia is unrelated to contraceptive use.