A wastewater has a $BO{D}_5$ of $150m\frac{g}{L}$ with a rate constant $($base e$),k=0\mathrm{.}15d^{-1}.$ The ultimate BOD$(BO{D}_u)$ in units of $m\frac{g}{L}$ will be most nearly?

A$.1\mathrm{.}3{10}^2$

B$.1\mathrm{.}5{10}^1$

C$.2\mathrm{.}8{10}^2$

D$.3\mathrm{.}7{10}^2$

E$.4\mathrm{.}8{10}^2$

Based on the information provided in the preceding problem, the BOD remaining $($unexerted$)$ after $5$ days incubation would be most nearly?

A$.1\mathrm{.}5{10}^1$

B$.1\mathrm{.}3{10}^2$

C$.2\mathrm{.}8{10}^2$

D$.3\mathrm{.}7{10}^2$

E$.4\mathrm{.}8{10}^2$