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If one diagonal of a square is along the...

If one diagonal of a square is along the line `x=2y` and one of its vertex is `(3,0)`, then its sides through the vertex are given by the equations -

A

`y-3x+9=0,3y+x-3=0`

B

`y+3x+9=0,3y+x-3=0`

C

`y-3x+3=0,3y-x+3=0`

D

`y-3x+3=0,3y+x+9=0`

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A
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