Enzymes are highly efficient catalysts. An enzyme catalyst increases the rate of decomposition of ${\mathrm{H}}_2{\mathrm{O}}_2\left(\mathrm{aq}\right)\text{ into }{\mathrm{H}}_2{\mathrm{O}}_{\left(\mathrm{l}\right)}\text{ and }{\mathrm{O}}_{2\left(\mathrm{g}\right)}\text{ by }{\mathrm{e}}^{20}\text{ times at }300\mathrm{K}\text{. }$ The activation energy of enzyme catalysed reaction is 2.0 kcal/mol. Which of the following statement(s) is/are correct?

 [Assume that the pre-exponential factor is not affected by temperature change and catalyst, activation energy is independent of temperature]