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if `A(cosalpha,sinalpha),B(sinalpha,-cosalpha),C(1,2)` are the vertices of `DeltABC`,then as `alpha` Find the locsus of its centroid.

A

`3(x^(2)+y^(2))-2x+4y+1=0`

B

`3(x^(2)+y^(2))-2x-4y+1=0`

C

`2(x^(2)+y^(2))-2x-4y+1=0`

D

None of these

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The correct Answer is:
A
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