If l,m,n are in arithmetic progression, then the straight line $lx+my+n=0$ will pass through the point

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

(B) (1,-2)