A reaction occurs in three rate determining steps having rate constants K1,K2 and K3 respectively and Arrhenius factor A1,A2,A3 respectively. The overall rate constant K=K3K1K2. If energy of activations for each step is Ea1,Ea2 and Ea3 respectively, then overall energy of activation is :
a. Ea1+Ea2+Ea3
b. Ea3Ea1×Ea2
c. Ea1+Ea2−Ea3
d. K3[K2Ea1+K1Ea2+K1K2K3Ea3]