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The abscissa of A and B are the roots of...

The abscissa of A and B are the roots of the equation `x^(2) + 2ax -b^(2) =0` and their ordinates are the roots of the equation `y^(2) + 2py -q^(2) = 0.` The equation of the circle with AB as diameter is

A

`x^(2) + y^(2) + 2ax + 2py -b^(2) -q^(2)=0`

B

`x^(2) + y^(2) + 2ax + py - b^(2) -q^(2)=0`

C

`x^(2) + y^(2) +2ax + 2py + b^(2) +q^(2)=0`

D

None of these

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A
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