The correct option is C D−glucose
Cellulose occurs in plants only and is the most abundant organic substance in plant kingdom. It is made up of β−D−Glucose.
CelluloseHydrolysis−−−−−−→β−D−Glucose
(C6H10O5)nH3O+−−−−−−→HydrolysisnC6H12O6 Cellulose β−D−Glucose
So, (c) is correct.