A passenger asks for a refund after purchasing a ticket. You should：

A passenger asks for a refund after purchasing a ticket. You should：
A.Immediately give a full refund without asking any questions.
B.Explain the airline's refund policy based on the type of ticket purchased and the
time of the request.
C.Refuse to give a refund.
D.Tell them to ask someone else.
正确答案：B
试题解析：不同类型的机票退票政策不同，需依据具体的机票类型以及乘客提出退票申请的时间等因素，向乘客解释航空公司的退票政策。