2. asking: resolve the apparent discrepancy but what is the apparent discrepancy ?
The trick part: Two group of people under same condition which is all consumed excess food but the real result is different because one group pf people regularly drink two or three alcoholic beverages a day.
So. Answer B.
THe answer A is wrong because it is inconsistent with premise, saying that This group of people (avoid exceeding the caloric intake)necassary to maintain their weight (by decreasing caloric intake from other sources).The premise: The intake of the both group is exceeded.
