According to the Rational Root Theorem, negative 2 fifths is a potential rational root of which function?

The Rational Root Theorem says a possible rational root p/q in lowest terms must have p divide the constant term and q divide the leading coefficient. For −2/5, 2 must divide the constant term and 5 must divide the leading coefficient. In choice A, the constant term is 4 and the leading coefficient is 25, so both conditions hold; the other choices fail at least one condition.

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