选择正确的答案

在争夺京张铁路修筑权时，“帝国主义者完全想错了”，“错”在了（    ）

A

    A bus comes to the bus stop．An old man gets on it．There's no seat for him．"The boy will give his seat to you．"the bus driver says to the old man．But the boy in the seat doesn't stand up．The bus driver looks at the boy,then he says to the old man again in a high voice(声音)，"The boy will be happy to give you his seat．"This time the boy hears it．His face turns red．He gets up at once．The old man sits down and says to the boy,"Thank you,my boy．"

有A、B、C三种溶液，A能使紫色石蕊试液变红，B能使无色酚酞试液变红，C遇紫色石蕊试液和无色酚酞试液均无变化，则三种溶液的pH由大到小的顺序是    （    ）