87. Which of the following statements about the pentose phosphate pathway is correct? ① The pentose phosphate pathway produces NADPH and ribose-5-phosphate. ② The pentose phosphate pathway begins with the oxidation of glucose-1-phosphate. ③ The pentose phosphate pathway consists of oxidative and non-oxidative reactions. ④ The pentose phosphate pathway is also known as hexose monophosphate shunt. ⑤ The oxidative phase of the pentose phosphate produces one molecule of NADPH. (A) ①②③ (B) ①③④ (C) ①③⑤ (D) ①④⑤ (E) ①②④