For a heterogeneous catalytic reaction

[A].	free energy of activation is lowered in the presence of catalyst, which remains unchanged at the end of reaction.
[B].	a relatively small amount of catalyst can cause the conversion of large amount of reactants which does not mean that catalyst concentration is important.
[C].	the catalyst does not form an intermediate complex with the reactant.
[D].	the surface of the catalyst does not play an important role during reaction.

Answer: Option A

Explanation:

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