The shortest distance between the lines `bar(r) = (hat(i) + 2hat(j) + hat(k)) + lambda (hat(i) - hat(j) - hat(k))` and `bar(r) = (2hat(i) - hat(j) - hat(k)) + mu (2hat(i) + hat(j) + 2hat(k))` is

Options

A. `(1)/(sqrt(3))`
B. `(1)/(sqrt(3))`
C. `(3)/(sqrt(3))`
D. `(sqrt(3))/(2)`

Answer

D