Find the equation of circle whose centre...

Find the equation of circle whose centre is the point `(1,- 3)` and touches the line `2x-y-4=0`

A

`5x ^(2) + 5y ^(2) -10x + 30y +49=0`

B

`5x ^(2) + 5y ^(2) +10x + 30y -49 =0`

C

`5x ^(2) +5y ^(2) + 10x + 30y -49=0`

D

`5x ^(2) + 5y ^(2) -10x -30y + 49 =0`

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The correct Answer is:

A

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