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If a circle passes through the point (a, b) and cuts `x^2+y^2=4` orthogonally, then the locus of its centre is :

A

`2 a x+2 b y+`(a^(2)+b^(2)+4`)=0`

B

`2 a x+2 b y-`(a^(2)+b^(2)+4`)=0`

C

`2 a x-2 b y+`(a^(2)+b^(2)+4`)=0`

D

`2 a x-2 b y-`(a^(2)+b^(2)+4`)=0`

Text Solution

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The correct Answer is:
B
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