A bacterium has a generation time of $$50\ \text{minutes}$$. A culture containing $$10^8$$ cells per $$\text{mL}$$ is incubated for $$300\ \text{minutes}$$. What will be the number of cells after $$300\ \text{minutes}$$?

A

$$64\times10^3$$ cells

B

$$6.4\times10^8$$ cells

C

$$64\times10^9$$ cells

D

$$6.4\times10^9$$ cells