Find the direction cosines of the line which is perpendicular to the lines with direction ratios `4, 1, 3 and 2, -3, 1`.
A. `pm (5)/(5sqrt(3)), pm (1)/(5sqrt(3)), pm (7)/(5sqrt(3))`
B. `pm (1)/(sqrt(3)), pm (1)/(5sqrt(3)), pm (-7)/(5sqrt(3))`
C. `pm (5)/(sqrt(3)), pm (1)/(sqrt(3)), pm (7)/(sqrt(3))`
D. `pm (5)/(sqrt(3)), pm (1)/(sqrt(3)), pm (-7)/(sqrt(3))`
