For a particular chemical reaction, the rate constant at 30.0 °C is 1.38 x 10^-4 L mol^-1 s^-1, while the value at 49.0 °C is 1.21 x 10^-3 L mol^-1 s^-1. What is the activation energy for this reaction?
a. 92.8 kJ
b. 200 kJ
c. 40.4 kJ
d. 343 kJ
e. 56.4 kJ