$\sqrt{(-9)^{2}}$的值是多少？

请问图中的题目应该选什么？

题目：$x$的值是多少？

$$x=\sqrt{(-9)^{2}}$$

从下面选择答案：

a) $\pm 9$

b) $-9$

c) 9

d) 以上都不是

e) 以上都是

f) 信息不足

很多网友表示答案为C哦，正确答案应该是多少呢？🙂

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