If the lines kx+2y-4=0 and 5x-2y-4=0 are...

If the lines `kx+2y-4=0 and 5x-2y-4=0` are conjugate with respect to the circle `x^2+y^2-2x-2y+1=0`, then `k=`.

A

0

B

1

C

2

D

3

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The correct Answer is:

B

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