General solution of differential equation: $x \large\frac{dy}{dx}$$+y=x^3 y^6$

Question

$(a)\;1=y^3x^5 (2.5 +cx^2) \\ (b)\;1=y^5 x^3(2.5 + cx^2) \\ (c)\;1= y^3x^5(2.5 x^2+c) \\ (d)\;1=y^5x^3(2.5 x^2+c)$