The equation of perpendicular bisectors of sides AB and AC of a ΔABC are x-y + 5 =0 and x + 2y = Q, respectively. lf the coordinates of vertex A are (1, -2), the equation of BC is
(a) 14x + 23y - 40 = 0
(b) 14x - 23y + 40 = 0
(c) 23x + 14y - 40 = 0
(d) 23x - 14y + 40 = 0
