听力原文：Our lost-and-found system allows you to notify us if you lose an item while ridin

g Metro. Once you submit information on the item, a search is done of the items we have found.If there is a match, you will be contacted to confirm it is your item. Then the item can be picked up or shipped to you. You will only be contacted if a match is found for your item.

According to the passage, when will the person be contacted by the lost-and-found office？

A．When the person is on the subway.

B．When the person comes to the office in person.

C．When the office finds a match for the item lost.

D．When the office finishes the search for the item lost.