Which statement most accurately describes the behavior of a catalyst? 
 (A) A catalyst increases the ∆G of a reaction and hence the forward rate. 
 (B) A catalyst reduces the ∆H of a reaction and hence the temperature needed to produce products. 
 (C) A catalyst reduces the activation energy for a reaction and increases the rate of a reaction. 
 (D) A catalyst increases the equilibrium constant and final product concentrations