# If $f(x) =2x^4-13 x^2+ax+b$ is divisible by $x^2-3x+2$, then $(a,b) =$

$\begin {array} {1 1} (1)\;(-9,-2) & \quad (2)\;(6,4) \\ (3)\;(9,2) & \quad (4)\;(2,9) \end {array}$

(3) (9,2)