Find the points on the line x + y = 4 which lie at a unit distance from the line 4x + 3y = 10

Question

$\begin {array} {1 1} (A)\;(-7, 11) or (-3, 1) & \quad (B)\; (7,11) or (3, 1) \\ (C)\;(-7, 11) or (3, 1) & \quad (D)\;(-7, 11) or (3, 1) \end {array}$

Comments

option c and d are same