15. The metabolic function of the pentose phosphate pathway is to:
(A) act as a source of ADP biosynthesis.
(B) generate NADPH and pentoses for the biosynthesis of fatty acids and nucleic acids.
(C) participate in oxidation-reduction reactions during the formation of H2O.
(D) provide intermediates for the citric acid cycle.
(E) synthesize phosphorus pentoxide.