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The point lying on common tangent to the...

The point lying on common tangent to the circles `x^(2)+y^(2)=4` and `x^(2)+y^(2)+6x+8y-24=0` is

A

(4,-2)

B

(-6,4)

C

(6,-2)

D

(-4,6)

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The correct Answer is:
D
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