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If the chord L -=y-mx-1=0 of the circle ...

If the chord `L -=y-mx-1=0` of the circle `S-=x^(2)+y^(2)-1=0` touches the circle
`S_(1)-=x^(2)+y^(2)-4x+1=0`, then the possible points for which L = 0 is a chord of contact of S = 0 are

A

`(2+-sqrt(6),0)`

B

`(2+-sqrt(6),1)`

C

`(2,0)`

D

`(sqrt(6),1)`

Text Solution

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The correct Answer is:
B
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