还盘是对发盘的拒绝,一旦作出还盘,原报盘即失效而失去约束力。

还盘是对发盘的拒绝,一旦作出还盘,原报盘即失效而失去约束力。
【正确答案】：A counter offer is a refusal of the offer which will be invalid and unbinding once a counter offer is made.