Below you are given three polar equations and one Cartesian equation, as well as polar plots of each equation. Match each plot with the correct equation. (Note: Values along the axes are given in Cartesian coordinates.)

A. $r=4+2\sec(\theta)\,$ (a conchoid)
B. $r=2-\csc(\theta)\,$ (a conchoid)
C. $r=\sin(\theta)\tan(\theta)\,$ (cissoid of Diocles)
D. $(x^2+y^2)^3=4x^2y^2$

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