According to the Rational Root Theorem, which statement about f(x) = 12x3 – 5x2 + 6x + 9 is true?

The Rational Root Theorem says a rational root of a polynomial with integer coefficients must be expressible as p/q, where p is a factor of the constant term and q is a factor of the leading coefficient. Here the constant term is 9 and the leading coefficient is 12, so any rational root must be a factor of 9 divided by a factor of 12. That is choice D.

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