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The function $\"\"$

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Find the vertex of above quadratic function $\"\"$ .

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$\"\"$

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Compare it to $\"\"$ .

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$\"\"$ , $\"\"$ and $\"\"$ .

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Since $\"\"$ , then the parabola open downward.

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$\"\"$ coordinate of vertex is axis of symmetry $\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ coordinate of vertex is $\"\"$

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$\"\"$

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$\"\"$

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Replace $\"\"$ with $\"\"$ .

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$\"\"$

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$\"\"$

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Vertex of $\"\"$ is $\"\"$ .

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So the required parabola open downward with vertex $\"\"$ .

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Option $\"\"$ is correct.