单项选择题

People might tke enzymess substitute for clorie restriction in thtthey estblishPeople migh

t tke enzymess substitute for clorie restriction in thtthey estblish chemicl link between strvingnd living long. B.they cn provide people with enough nutrition. C.they work in similr wy tht clorie restriction does. D.theyre fvored by people who finnce the drug reserch.A.they establish a chemical link between starving and living long.B.they can provide people with enough nutrition.C.they work in a similar way that calorie restriction does.D.they are favored by people who finance the drug research.