Solve: $(3xy+y^2)dx+(x^2+xy)dy=0 \qquad y(1)=1$

Question

$(a)\;x^2(2x+y)=3 \\ (b)\;y^2(2x+y)=3 \\ (c)\;x^2y(2x+y)=3 \\ (d)\;x^2y(2x+3)=9 $