If the reaction, $A+2B⟶3C+D$, which of the following expression does not describe changes in the concentration of various species as a function of time:

$\begin{array}{l}\text{ Molality }=\frac{\text{ No. of Moles of solute }}{\text{ wt (inkg) of solvent }}\\ \text{ Molarity }=\frac{\text{ No. of Moles }}{\text{ volume (in litre) of solution }}\\ \mathrm{\%}\text{ weight by volume }=\frac{\text{ weight of sloute }}{\text{ volume of solution }}\times 100\\ \mathrm{\%}\text{ by volume }=\frac{\text{ volume of solute }}{\text{ volume of solution }}\times 100\\ \mathrm{A}+2\mathrm{B}\to 3\mathrm{C}+\mathrm{D}\end{array}$

Change in concentration of reactants and products can be used to describe reaction rate.

Rate of reaction  $=-\frac{\mathrm{d}\left[\mathrm{A}\right]}{\mathrm{dt}}=-\frac{1}{3}\frac{\mathrm{d}\left[\mathrm{B}\right]}{\mathrm{dt}}=\frac{1}{3}\frac{\mathrm{d}\left[\mathrm{C}\right]}{\mathrm{dt}}=\frac{\mathrm{d}\left[\mathrm{D}\right]}{\mathrm{dt}}$.

Thus, the Option contains the incorrect response (D).