$\"\"$

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Label the $\"\"$ - intercept and center of the circle.

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$\"\"$

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Standard form of a circle is $\"\"$ , where $\"\"$ is center and $\"\"$ is radius.

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From the figure center of the circle $\"\"$ .

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The distance between center and $\"\"$ -intercept is radius.

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$\"\"$

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The distance between $\"\"$ and $\"\"$ is radius of the circle.

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Calculate the distance between two points by using formula: $\"\"$ .

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Substitute the values of $\"\"$ $\"\"$ and $\"\"$ in distance formula.

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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Radius $\"\"$ .

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$\"\"$

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Substitute the center and radius in standard form of the circle $\"\"$ .

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$\"\"$

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$\"\"$

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Option (a) is correct.

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$\"\"$

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Option (a) is correct.