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If the points (2,a,-1),(3,4,b)and(1,-2,3...

If the points `(2,a,-1),(3,4,b)and(1,-2,3)` are collinear, the values of a and b are

A

`-2,-5`

B

`10,5`

C

`1,-5`

D

`2,5`

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The correct Answer is:
C
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