If vec(a)= 3vec(i) -5vec(j), vec(b)= 6ve...

If `vec(a)= 3vec(i) -5vec(j), vec(b)= 6vec(i) + 3vec(j)` are two vectors and `vec(c )` is a vector such that `vec(c )= vec(a) xx vec(b)`, then `|vec(a)|:|vec(b)|: |vec(c )|`=

A

`sqrt34: sqrt45: sqrt39`

B

`sqrt34: sqrt45: 39`

C

`34: 39: 45`

D

`39: 35: 34`

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The correct Answer is:

B

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