The temperature dependence of the rate constants $(k)$ of a chemical reaction can be expressed in terms of Arrhenius equation, which contains the corresponding activation energy $\left(E_a\right)$ term. The correct plot of the ratio of the rate constants (not drawn to scale) of different chemical reactions, at two temperatures 300 K and 400 K , as a function of their $E_{\mathrm{a}}$ values (in $\mathrm{JJol} \mathrm{J}^{-1}$ ) is

• Correct answer
  A

  
  
• B

  
  
• C

  
  
• D

  
  

Hence, the correct answer is option: 'A'.