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Triangle $ABC$ is a right triangle, with right angle at point $C$.

If $ 1\leq x \leq 2 $, what is the range of values for $y$?

A

$ \sqrt2 \leq y \leq 2 $

B

$ \sqrt2 \leq y \leq 2\sqrt2 $

C

$ \cfrac{2}{\sqrt2} \leq y \leq \sqrt5 $

D

$ \cfrac{2}{\sqrt2} \leq y \leq 2\sqrt2 $

E

$ \sqrt5 \leq y \leq 2\sqrt2 $

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