Below you are given six polar equations and plots of four of these curves. Match each plot with the correct equation. (Note: Values along the axes are given in Cartesian coordinates.)

A. $r^2=4\cos(2\theta)$
B. $r^2=\sin(2\theta)$
C. $r=2\cos(3\theta/2)$
D. $r^2\theta=1$
E. $r=1+2\cos(2\theta)$
F. $r=1+2\cos(\theta/2)$

1.
2.
3.
4.