Calories consumed in excess of those with which the body needs to be provided to maintain its weight are normally stored as fat and the body gains weight. Alcoholic beverages are laden with calories. However, those people who regularly drink two or three alcoholic beverages a day and thereby exceed the caloric intake necessary to maintain their weight do not in general gain weight. Which one of the following, if true, most helps to resolve the apparent discrepancy? ['Some people who take in fewer calories than are normally necessary to maintain their weight do not lose weight.', 'Some people who regularly drink two or three alcoholic beverages a day avoid exceeding the caloric intake necessary to maintain their weight by decreasing caloric intake from other sources.', 'Many people who regularly drink more than three alcoholic beverages a day do not gain weight.', 'Excess calories consumed by people who regularly drink two or three alcoholic beverages a day tend to be dissipated as heat.']