The direction ratio of a line are 2,3,7 then its direction cosines are which of the following ?
(A) 1/6,1/4,7/12
(B) √2/62, √3/62, √7/62
(C) 2/√62, 3/√62, 7/√62
(D) 2/12, 3/12, 7/12
