Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A): A series of cellulolytic enzymes are employed in the wood degradation process by brown rot fungi.
Reason (R): Lignin is not degraded by these fungi, therefore, it has typical brown colour wood remains.
In light of the above statements, choose the most appropriate answer from the options given below.