|(ax+y, x, y),(ay+1, y, 1),(0, ax+y, ay+...

`|(ax+y, x, y),(ay+1, y, 1),(0, ax+y, ay+1)|=0 where a^2x+2ay+1!=0` represents (A) a straight line (B) a circle (C) a parabola (D) none of these

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