Find (f ∘ g) when f(x) = x² + 5x + 6 and g(x) = 1/x+3
a. 5x³ +36x²+81x+55/ x²+6x+9
b. 1/(x²+5x+9)
c. (6x²+41x+70)/(x²+6x+9)
d. x+2