If the product of two zeroes of the polynomial $f(x)=2x^3+6x^2-4x+9$ is $3$,then its third zero is ______

Question

$\begin{array}{1 1}(A) \;\large\frac{3}{2}\\(B)\;-\large\frac{3}{2}\\(C)\;\large\frac{9}{2}\\(D)\;-\large\frac{9}{2}\end{array}$

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