If the line, $\large\frac{x-3}{2} =\frac{y+2}{-1}=\frac{z-4}{3}$ lies in the plane,$lx + my - z = 9,$ then $l^2+m^2$ is equal to :

Question

$\begin{array}{1 1}(1)26 \\ (2) 18 \\ (3) 5 \\ (4) 2 \end{array}$