The equation of the locus of a point who...

The equation of the locus of a point whose distance from (a, 0) is equal to its distance from y-axis, is

A

`y^2 - 2ax =a^2`

B

`y^2 - 2ax +a^2 =0`

C

`y^2 + 2ax +a^2 = 0`

D

`y^2 + 2ax =a^2`

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The correct Answer is:

B

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