The open loop transfer function of a unity feedback system is G(S)=$$\frac{K}{S(S^{2}+S+2)(S+3)}$$ The range of K for which the system is stable is

A

$$\frac{21}{44}>K>0$$

B

$$13>K>0$$

C

$$\frac{21}{44}>K>\infty$$

D

$$-6<K<\infty$$