问题详情

What can senders do when ordinary letters get lost？

A．They have no claim on compensation.

B．They will get some compensation up to a maximum of 60.50 pounds.

C．If they can produce the certificate of posting, they can have a compensation claim.

D．They can accuse the post office of it.

请帮忙给出正确答案和分析，谢谢！