【单选题】

Open communication should exist with the operator telling the manufacturer as soon as some new kind of situation arises and the manufacturer responding back with solid help to the operators.

A、运营商应该用开放的通信设备告知厂家新出现的情况，厂家也要回应以必要的帮助。
B、双方应采取开放式沟通方式，一旦出现新情况,运营商应告知厂家，而厂家要给予运营商以可靠的帮助。
C、一旦出现新情况，双方应该进行公开的沟通，运营商告知发生的新情况， 厂家提供帮助。