Which of the Following Functions Are the Constant Solutions of the Equation

Essay

Which of the following functions are the constant solutions of the equation $$\frac { d y } { d t } = y ^ { 4 } - y ^ { 3 } + 6 y ^ { 2 }$$
a. $y ( t ) = 2$
b. $y ( t ) = 3$
c. $y ( t ) = 5$
d. $y ( t ) = 0$
e. $y ( t ) = e ^ { t }$