As you continue to talk to Ms. F. she tells you, "My friend told me to take a natural product called 'ma huang to help me lose weight. It can't hurt me; it's just a part of some plant" which response by the nurse would be most appropriate?

A) You need to stop taking that it has been banned by the FDA and you could go to jail.

B) You should be careful that so-called plant can easily kill you.

C) That herb has been safely used in other countries for centuries, you should be fine as long as you do not abuse it.

D) The active ingredient in that herb is a known stimulant which will increase your blood pressure and heart rate and could negatively affect your heart.