题目内容：
When the two parties are preparing a contract, if they both refer specifically to one of the Incoterms, they ____________.( )(本题1.5分)A、 can be sure of defining their respective responsibilities simply and safely
B、 stillcan not be sure of defining their respective responsibilities simply and safely
C、 must compare it to their own business
D、 will have no risk in doing this business
参考答案：