The shape of \( y=x^{2} \), but upside-down and vertically stretched by a factor of 5 . A. \( f(x)=5(x-5) x^{2} \) B. \( f(x)=-5 x^{2} \) C. \( f(x)=(x-5)^{2} \) D. \( f(x)=5 x^{2} \)

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