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If the line 3x - 4y - k = 0 (k gt 0) tou...

If the line `3x - 4y - k = 0 (k gt 0)` touches the circle `x^(2)+y^(2)-4x-8y-5 =0` at (a, b) then `k + a + b` is equal to :-

A

20

B

22

C

`-30`

D

`-28`

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Verified by Experts

The correct Answer is:
A
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