Given below are two statements labelled as Assertion (A) and Reason (R) Assertion (A): Enzymes are very specific for a particular reaction and for a particular substrate. Reason (R): Enzymes are biocatalysts. Select the most appropriate answer from the options given below: (a) Both A and R are true and R is the correct explanation of A (b) Both A and R are true but R is not the correct explanation of A. (c) A is true but R is false. (d) A is false but R is true.