Cellulose Lacks Nutritive Value for Humans Because

Cellulose lacks nutritive value for humans because:

A) the products of its digestion are excreted without utilization.
B) its conformation prevents attack by digestive enzymes.
C) we lack the enzymes which can catalyze the hydrolysis of the glycosidic linkages.
D) it passes through the digestive tract so rapidly.
E) the molecules possess such a high molecular weight.