If $x$ is positive and $y$ is $1$ less than the square of $x,$ which of the following expresses $x$ in terms

If $x$ is positive and $y$ is $1$ less than the square of $x,$ which of the following expresses $x$ in terms of $y?$

A. $x=y^2-1$

B. $x=y^2+1$

C. $x=\sqrt{y}+1$

D. $x=\sqrt{1-y}$

E. $x=\sqrt{y+1}$

The OA is E

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