7. Which glycolytic reaction cannot be directly reversed in gluconeogenesis?(A) glucose converted into glucose-6-phosphate(B) glucose-6-phosphate converted into fructose-6-phosphate(C) 3-phosphoglycerate converted into 1,3-bisphosphoglycerate(D) 1,3-bisphosphoglycerate converted into glyceraldehyde-3-phosphate(E) phosphoenolpyruvate converted into 2-phosphoglycerate