A 65-year-old is interested in taking ginkgo. Which of the following statements is correct regarding ginkgo? (a) Ginkgo is contraindicated in diabetes and pregnancy (b) There is a drug-herb interaction between ginkgo and aspirin (c) Toxic effects include hypertension and cardiac arrest (d) There is a drug-herb interaction between ginkgo and phenelzine (e) Ginkgo is contraindicated in patients with gallstone pain