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Directions: Answer the following questions according to the text.What has become "the norm" so far in new age communication？

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对金属指示剂叙述错误的是

A. MIn稳定性要略大于MY的稳定性
B. 指示剂应在适宜pH范围内使用
C. 指示剂本身颜色与其生成的配位物质颜色显著不同
D. 金属指示剂配合物MIn应易于溶于水，不应形成胶体沉淀