If you can increase your ________ to 10% , we will purchase the

If you can increase your ________ to 10% , we will purchase the following types of bathroom fittings.
A、price
B、charge
C、discount
D、sales volume
【正确答案】：C
【题目解析】：price价格；charge费用；discount折扣；sales volume销量句意：如果你能将你的折扣提高到10%，我们将购买以下类型的浴室配件。