To Relieve the Symptoms of a Lower UTI for Which

To relieve the symptoms of a lower UTI for which the patient is taking prescribed antibiotics,the nurse suggests that the patient use the over-the-counter urinary analgesic of phenazopyridine (Pyridium) ,but should give the patient which of the following cautions?

A) This preparation contains methylene blue,which turns the urine blue or green.
B) This preparation must be taken with food to prevent gastrointestinal irritation.
C) This preparation causes the urine to turn reddish orange and can stain underclothing.
D) This preparation frequently causes allergic reactions and should be stopped if a rash occurs.