Let the equation of the plane, that passes through the point (1, 4, –3) and contains the line of intersection of the planes 3x – 2y + 4z – 7 = 0 and x + 5y – 2z + 9 = 0, be αx + βy + γz + 3 = 0, then α + β + γ is equal to :
(1) –23
(2) –15
(3) 23
(4) 15
