Question: 4NH3(g) + 5O2(g) → 4NO(g) + 6H2O(g) This reaction will experience a rate increase by the addition of a cataylst such as platinum. Which of the following best explains why?
A: The catalyst increases the overall frequency of collisions in the reactant molecules.
B: The catalyst increases the frequency of collisions that occur at the proper orientation in the reactant molecules.
C: The catalyst introduces a new reaction mechanism for the reaction.
D: The catalyst increases the activation energy for the reaction.
Please eliminate two incorrect options first, then think it step by step and choose the most proper one option.