The Nurse Teaches Older Adults at a Community Center About

The nurse teaches older adults at a community center about the effectiveness of vitamin C in preventing the common cold. The nurse evaluates that learning has occurred when an older adult makes which statement?

A) "Vitamin C, in the form of orange juice, is the most effective aid in preventing the common cold."
B) "There is no proof that vitamin C prevents the common cold."
C) "Vitamin C is only effective in preventing the common cold if 2 grams/day are taken."
D) "Vitamin C must be taken prior to the onset of the cold to be most effective."