When a passenger requests a ticket refund， which of the following do you need to check first？

When a passenger requests a ticket refund， which of the following do you need to check first？
A.The passenger's shoe size.
B.The airline's refund policy based on the ticket type.
C.The passenger's hair color.
D.The weather on the travel date.
正确答案：B
试题解析：当乘客要求退票时，首先需要根据机票类型查看航空公司的退票政策，因为不同类型的机票退票规定不同。