Answer:
B
Step-by-step explanation:
Plot the graph of the equation on the polar coordinate plane (see attached diagram for details).
A. There is no symmetry about the horizontal axis, because three parts of the graph are above the axis and two parts of the graph are under the axis.
B. There is symmetry about the vertical axis, because if you reflect left (or right) part about the vertical axis it will coincide with the other part.
C. There is no symmetry about the pole (see diagram)
D. This option is false, because option B is true (there is axis of symmetry)
