The Maxwell–Boltzmann distribution curve for a gaseous reaction mixture is shown below. The activation energies for the catalysed and uncatalysed pathways of the reaction are marked as Ea(cat)E_{\text{a}}\text{(cat)}Ea(cat) and Ea(uncat)E_{\text{a}}\text{(uncat)}Ea(uncat), respectively.
Which area represents the increase in the number of molecules with energy greater than or equal to the activation energy when a catalyst is added to the mixture?
The area of region QQQ
The area of region Q+RQ + RQ+R
The area of region PPP
The area of region P+QP + QP+Q