For a reaction A ⟶ B, if the rate of change in concentration of A (C_A), can be written as $$\frac{{ - dCA}}{{dt}} = k.C_A^2,$$   then the change concentration with time from initial concentration of A, Cao is given by

A. $$\left( {\frac{1}{{{C_A}}}} \right) - \left( {\frac{1}{{{C_{AO}}}}} \right) = K.t$$

B. (C_AO - C_A) = k.t

C. $$\left( {{C_{A{O^2}}} - C_A^2} \right) = k.t$$

D. $${\text{In}}\left( {\frac{{{C_{AO}}}}{{{C_A}}}} \right) = k.t$$

Answer: Option A