Which of the following sets of parametric equations represent the ellipse given by $\displaystyle \frac{x^2}{4}+\frac{y^2}{64}=1$? To receive credit, you must select all correct choices.

A. $x=4\sin(t),\quad y=8\cos(t),\quad 0 \le t \le 2\pi$
B. $x=4\sin(t),\quad y=64\cos(t),\quad 0 \le t \le 2\pi$
C. $x=2\sin(t),\quad y=8\cos(t),\quad 0 \le t \le 2\pi$
D. $x=8\sin(t),\quad y=2\cos(t),\quad 0 \le t \le 2\pi$
E. $x=8\sin(t),\quad y=4\cos(t),\quad 0 \le t \le 2\pi$
F. $x=64\sin(t),\quad y=4\cos(t),\quad 0 \le t \le 2\pi$
G. $x=64\sin(t),\quad y=2\cos(t),\quad 0 \le t \le 2\pi$
H. $x=2\sin(t),\quad y=64\cos(t),\quad 0 \le t \le 2\pi$