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If vectors 2hati-hatj+hatk ,hati+2hatj-3...

If vectors `2hati-hatj+hatk` ,`hati+2hatj-3hatk` and `3hati+mhatj+5hatk` are coplaner, then `m` is a root of the equation

A

`x^(2)+3x=4`

B

`x^(2)+2x=6`

C

`x^(2)+3x=6`

D

`x^(2)-3x=4`

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A
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