If the direction ratios of a line 1, -3,...

If the direction ratios of a line 1, -3, 2, then its direction cosines are

A

`(1)/(sqrt(14)),(-3)/(sqrt(14)),(2)/(sqrt(14))`

B

`(1)/(sqrt(14)),(2)/(sqrt(14)),(3)/(sqrt(14))`

C

`(-1)/(sqrt(14)),(-3)/(sqrt(14)),(-2)/(sqrt(14))`

D

`(-1)/(sqrt(14)),(-2)/(sqrt(14)),(-3)/(sqrt(14))`

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The correct Answer is:

A

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