—______do you like your birthday so much?

—I always have a party and get lots of presents. [     ]

A. How

B. What

C. Which

D. Why

客户持加油卡加油时，按当日相关油品的零售价和实际加油数量扣减用户卡余额；客户持加油卡到便利店消费时，按当日便利店系统维护的相关商品销售价格和购买数量扣减用户卡余额。