During a Routine Health Examination,the Patient Tells the Nurse That

During a routine health examination,the patient tells the nurse that she uses a variety of herbal therapies to maintain her health.In discussing her use of herbs,what should the nurse caution the patient about?

A) Most herbs are toxic and carcinogenic and should be used only when proven effective.
B) Herbs are not any better than conventional drugs in maintaining health and may be more unsafe.
C) Herbs should be purchased only from manufacturers with a history of quality control of their products.
D) Because herbal therapies may mask the symptoms of serious disease,frequent medical evaluation is required during their use.