The equation r = 4sin(θ) represents a circle. What is the radius of the circle, and what is the symmetry of the graph?
A
The radius is 2 units, and the graph is symmetric about the line .
B
The radius is 4 units, and the graph is symmetric about the line .
C
The radius is 2 units, and the graph is symmetric about the polar axis.D
The radius is 4 units, and the graph is symmetric about the polar axis.