Find the direction cosines of the two lines which
are connected by th relations. `l-5m+3n=0a n d7l^2+5m^2-3n^2=0`
A. `pm(-1)/(sqrt(6)), pm (1)/(sqrt(6)), pm (2)/(sqrt(6))`
B. `pm (1)/(sqrt(6)), pm (1)/(sqrt(6)), pm (-2)/(sqrt(6))`
C. `pm (2)/(sqrt(6)), pm (2)/(sqrt(6)), pm (-1)/(sqrt(6))`
D. `pm (2)/(sqrt(6)), pm (2)/(sqrt(6)), pm (1)/(sqrt(6))`
