【单选题】If a tourist desires to buy goods that is out of stock, and asks the guide to buy and arrange the shipment, what should not the guide do?
A.
Generally speaking, the guide should accept the request immediately.
B.
The guide should report to the travel service for permission and follow the directions of the travel service.
C.
Let the tourist leave enough cash with the guide. The travel service will refund the balance.
D.
The guide mails the receipt, consignment form and consignment receipt to the upon approval of the travel service. The travel service keeps the copies of these documents for check.