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A variable chord is drawn through the or...

A variable chord is drawn through the origin to the circle `x^2+y^2-2a x=0` . Find the locus of the center of the circle drawn on this chord as diameter.

A

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

B

`x^(2) + y^(2) + ax = 0`

C

`x^(2) + y^(2) + ax = 0`

D

`x^(2) + y^(2) -ax -a y =0`

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The correct Answer is:
A
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