The function \(f\) has the property that \(f(x)\), \(f'(x)\), and \(f''(x)\) are negative for all real values \(x\). Which of the following could be the graph of \(f\) ?

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If \(f(x)\) is negative, all points on the graph should have negative \(y\)-values (Quadrant III and IV only).

If \(f'(x)\) is negative, the graph should be decreasing at all intervals.

If \(f''(x)\) is negative, the graph should be concave down. The slope should be becoming more negative as \(x\) increases.