【正确答案】 A

【答案解析】To solve this problem, determine how the quantity x-y compares to 0, given that x is a negative integer and y is a positive integer. Because x is a negative integer, subtracting a positive integer from it would yield another negative integer with a greater value; therefore, the quantity x-y＜0, and Quantity A (0) is greater than Quantity B (x-y).