The polar equation is
.
Convert the polar equation to a rectangular equation.
\
Squaring on each side.
\
Substitute
.
.
The equation in rectangular form is
.
The equation
is in the form of standard circle equation
with center
and
.
Observe the graphs:
\The graph (E) is a circle with radius
and center
.
The graph (E) is correct choice.
\The graph (E) is correct choice.