The range of values of m for which the l...

The range of values of m for which the line `y = mx+2 `cuts the circle `x^(2) +y^(2) =1`at distinct or coincident points is `:`

A

`( - oo,- sqrt( 3)] uu [ sqrt( 3) , +oo)`

B

`[ - sqrt( 3) , sqrt( 3) ]`

C

`[ sqrt( 3), + oo)[ sqrt( 3) , +oo)`

D

None of these

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The correct Answer is:

A

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