The general solution of the differential equation $\left(3 x^2-2 x y\right) d y+\left(y^2-2 x y\right) d x=0$ is
- A$x^2-x y=c y^2$
- B$y^2-x y=c x^3$
- C$x y-x^2=c y^3$
- D$x y-y^2=c y^3$
✓ Correct answer: C
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