$(A)$ Enzymes are biocatalysts.
$(B)$ Enzymes are non-specific and can catalyse different kinds of reactions.
$(C)$ Most Enzymes are globular proteins.
$(D)$ Enzyme - oxidase catalyses the hydrolysis of maltose into glucose.
Choose the correct answer from the option given below:
(a) Water solubility is maximum at a $pH$ when concentrations of anions and cations are equal
(b) They give ninhydrin test
(c) On reacting with nitrous acid give off ${N_2}$