A point P(x , y) moves in the xy-plane s...

A point `P(x , y)` moves in the xy-plane such that `x=acos^2theta` and `y=2asintheta,` where `theta` is a parameter. The locus of the point `P` is a/an (A) circle (B) ellipse (C) unbounded parabola (D) part of the parabola

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