The general solution of the differential equation (y^{2} – x^{3} )dx – xydy = 0 (x ≠ 0) is : (where c is a constant of integration)

- (1) y
^{2}+ 2x^{2}+ cx^{3}= 0 - (2) y
^{2}+ 2x^{3}+ cx^{2}= 0 - (3) y
^{2}– 2x + cx^{3}= 0 - (4) y
^{2}– 2x^{3}+ cx^{2}= 0