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The line 3x-2y=k meets the circle x^(2)+...

The line `3x-2y=k` meets the circle `x^(2)+y^(2)=4r^(2)` at only one point if `k^(2)=`

A

`x^(2)+y^(2)+3 x-3 y-a^(2)+9=0`

B

`x^(2)+y^(2)+3 x+3 y-a^(2)+9-0`

C

`x^(2)+y^(2)-3 x+3 y-a^(2)+9=0`

D

`x^(2)+y^(2)-3 x-3 y-a^(2)+9=0`

Text Solution

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The correct Answer is:
A
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