An ellipse is drawn by taking a diameter of the circle (x – 1)2 + y2 = 4 as its semi-minor axis and a diameter of the circle x2 + (y – 2)2 = 16 is a semi-major axis. If the center of the ellipse is at the origin and its axes are the coordinate axes, then the equation of the ellipse is
1
x2 + 4y2 = 64
2
4x2 + y2 = 16
3
x2 + 8y2 = 64
4
8x2 + y2 = 64