Consider the Autonomous Differential Equation

Which of These Is $y=2 k \pi$

Multiple Choice

Consider the autonomous differential equation

Which of these is a complete list of the equilibrium solutions of this differential equation?

A) $y=2 k \pi$ , where $k$ is an integer
B) $y=0$
C) $y=k \pi$ , where $k$ is an integer
D) $y=\frac{(2 k+1) \pi}{2}$ , where $k$ is an integer