If $x_1, \; x_2, \; x_3$ and $y_1, \; y_2, \; y_3$ are both in GP with the same common ratio, then the points $(x_1, y_1), \; (x_2, \; y_2)$ and $(x_3, y_3)$:

Question

( A ) lie on a circle
( B ) lie on an ellipse
( C ) are vertices of a triangle
( D ) lie on a straight line