We've got to believe it,he said..."We can't afford not to."

We've got to believe it,he said..."We can't afford not to."
A、There is no reason not to believe it.
B、We have no other choice but to believe it.
C、We should pretend to believe it even if we don't.
D、The consequence of not believing it would be severe.
【正确答案】：D
【题目解析】：原句意为：“我们必须相信这是真的"，他说……“我们不敢不信呀！”联系上下文可知，如果不信的话，后果可能是非常严重的。答案为D。