The straight line y = x - 2 rotates abou...

The straight line `y = x - 2` rotates about a point where it cuts the x-axis and becomes perpendicular to the straight line `ax +by +c = 0`. Then its equation is

A

`ax+by+2a=0`

B

`ay-bx+2b=0`

C

`ax+by+2b=0`

D

None of these

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The correct Answer is:

B

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