4. Factors Affecting Rate of Reaction (Catalysis) An effective catalyst speeds up the rate of reaction by providing an alternate reaction mechanism with a lower activation barrier. Consider a reaction with the following elementary steps Reaction 1: A+B = X (slow step) Reaction 2 X + 2CY+ A (fast step) Reaction 3 Y+ BP (medium step) Identify which of the following elementary steps must be bypassed in order to speed up the reaction by a catalyst. Briefly explain your choice (K/U, 1C)