WAEC BIOLOGY 2003 : Which of the following groups of compounds are products of the light stage of photosynthesis ?

Which of the following groups of compounds are products of the light stage of photosynthesis ? I. Ribulose bi-phosphate (RuBP) II. Nicotin amide di-phosphorus (NADPH₂) III. Oxygen (O₂) IV. Adenosine Triphosphate (ATP)
A. I, II and III
B. I, III, and IV
C. II, III and IV
D. I, II, III and IV
Answer: II, III and IV