The Nurse Teaches Elderly Citizens at a Senior Citizen Centre

The nurse teaches elderly citizens at a senior citizen centre about the effectiveness of vitamin C in preventing the common cold. The nurse evaluates learning has occurred when the elderly citizens make which statement?

A) "Vitamin C, in the form of orange juice, is the most effective aid in preventing the common cold."
B) "The effect of vitamin C on the common cold relates to its ability to promote an immune response."
C) "Dosages of 1 gram per day of vitamin C are necessary to prevent the common cold."
D) "Vitamin C must be taken prior to the onset of the cold to be most effective."