
Passage: "Chili peppers relieve indigestion". People who suffer from indigestion after a spicy meal may be shocked and can't believe it. However, this is the conclusion drawn by Italian experts through experiments. They gave the subjects with indigestion a pill containing chili ingredients before meals, and after five weeks, 60% of the subjects' discomfort symptoms were relieved.
Question: Which of the followings, if true, can best refute the above experimental conclusions?
A. A.Capsaicin in chili peppers can block the secretion of a neurotransmitter to some extent
B. B.In this experiment, 5% of the subjects had aggravated their discomfort symptoms
C. C.In another group of subjects who took the pill after meals, 55% of the subjects' discomfort symptoms were relieved
D. D.After paying attention to a healthy diet, people with dyspepsia usually relieve their discomfort within a month
Answer: