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If two parabolas y^(2)=4a(x-k) and x^(2)...

If two parabolas `y^(2)=4a(x-k) and x^(2)=4a(y-k)` have only one common point P, then the coordinates of P are

A

`(2k, 2k)`

B

`(k, k)`

C

`(a, 2k)`

D

`(k, 2a)`

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The correct Answer is:
A
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