Mrs Lawson, a 2nd-Grade Teacher, Tells the School Nurse That

Mrs. Lawson, a 2nd-grade teacher, tells the school nurse that she has started taking echinacea so that she will not get sick this school year. What is the nurse's best response?

A) "That is terrific. I think you will notice a big difference in how you feel."
B) "Echinacea should only be taken when you feel symptoms of a cold starting."
C) "It is best to get a therapeutic level of echinacea before being exposed to sick children."
D) "Are you taking vitamin C as well, because echinacea needs to be taken in conjunction with vitamin C?"