Assertion(A): A catalyst speed up a reaction but does not participate in its mechanism.
Reason(R): A catalyst provides an alternative path of lower activation energy to the reactants.
A. If both (A) and (R) are true and (R) is the correct explanation of (A).
B. If both (A) and (R) are true but (R) is not the correct explanation of (A).
C. If (A) is correct but (R) is incorrect.
D. If (A) and (R) are both incorrect.
