Convert the Polar Equation to Rectangular Coordinates $\frac {r } { 6 } = \sec \theta$

Multiple Choice

Convert the polar equation to rectangular coordinates. $\frac {r } { 6 } = \sec \theta$

A) $y = 6$
B) $y = 6 x$
C) $x = 6$
D) $x y = 6$
E) none of these