$\large\frac{dy}{dx} =\large\frac{y+x+1}{y+x +5}$

Question

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