Acknowledgement by you of receipt of a distress message from a vessel which，beyond any possible doubt，is not in your vicinity and is a long distance away must be made when（）.
A. Vessels nearer the distress vessel acknowledge receipt
B. Vessels nearer the distress vessel fail to acknowledge receipt
C. Even you have not reveived the distress
D. Even the vessel in distress expressly prohibit you from providing any salvage service
微信支付 
支付宝支付