Question: Suppose that for a function f, the equation f (x) = 0 has no real-number solution. Which of the following statements MUST be true? A.

Suppose that for a function f, the equation f (x) = 0 has no real-number solution.

Which of the following statements MUST be true?

A. f is an invertible function.

B. The graph of f is a horizontal line.

C. f has no y-intercept.

D. f has no x-intercept

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