Find the equation of the line which passes through the point of intersection of the lines 2x – y + 5 = 0 and 5x + 3y – 4 = 0 and is perpendicular to the line x – 3y + 21 = 0.
(a) 2x + y + 10 = 0
(b) 3x + y + 21 = 0
(c) 3x + y = 0
(d) 3y – x + 21 = 0
