Maltase converts maltose to glucose, not proteins to peptides — hence I is incorrect.
Diastase from malt breaks starch to maltose, and zymase from yeast converts glucose to ethanol and CO$_2$.
Assertion (A): Maltose is a reducing sugar.
Reason (R): One of the two glucose units can open to expose free aldehydic group in solution.
The logic gate equivalent to the combination of logic gates shown in the figure is