Which of the following chemical reactions expresses correctly the role of the catalyst in the reaction? OA) reactant 1 + reactant 2 -> product 1 OB) reactant 1 + reactant 2 + catalyst => product 1 OC) reactant 1 + reactant 2 + catalyst → product 1 OD) reactant 1 + reactant 2 + catalyst → product 1 + catalyst