The first-order irreversible liquid phase reaction $A \rightarrow B$ occurs inside a constant volume $(V)$ isothermal CSTR with the initial steady state conditions shown in the figure. The gain, in $\frac{\mathrm{kmol} / \mathrm{m}^{3}}{\mathrm{~m}^{3} / \mathrm{h}}$, of the transfer function relating the reactor effluent $A$ concentration, $c_{A}$, to the inlet flow rate, $F$, is
- $1.2$
- $0.4$
- $0.6$
- $0.8$
