A Client Is Taking Doses of Vitamin C

A client is taking doses of vitamin C. She tells the nurse that she has heard that vitamin C prevents and cures colds and that she is wondering if this is true. What is the nurse's response?

A) "Vitamin C is most helpful in preventing colds, but large doses are required."
B) "Vitamin C is a fat-soluble vitamin and should not be taken in large doses."
C) "I have also heard that vitamin C will help prevent colds, but it hasn't been proven."
D) "Vitamin C supplements should be taken only by children and older persons."