The general solution of the differential equation $$(x - y^2)dx + y(5x + y^2)dy = 0$$ is

A

$$(y^2 + x)^4 = C(y^2 + 2x)^3$$

B

$$(y^2 + 2x)^4 = C(y^2 + x)^3$$

C

$$(y^2 + x)^3 = C(2y^2 + x)^4$$

D

$$(y^2 + 2x)^3 = C(2y^2 + x)^4$$