If a line
makes angles `90o," "135o," "45o`
with the x, y and z-axes respectively, find
its direction cosines.

A. `0,(1)/(sqrt(2)), - (1)/(sqrt(2))`

B. `0, - (1)/(sqrt(2)), - (1)/(sqrt(2))`

C. `1, (1)/(sqrt(2)), (1)/(sqrt(2))`

D. `0, - (1)/(sqrt(2)), (1)/(sqrt(2))`