Find the equation of the straight line which passes through the point (1, – 2) and cuts off equal intercepts from axes

Question

$\begin {array} {1 1} (A)\;x-y-1=0 & \quad (B)\;x+y-1=0 \\ (C)\;x+y-1=0 & \quad (D)\;y-x=1 \end {array}$