17. We have two enzymes maltose phosphorylase and sucrose phosphorylase catalyzing the following reactions: With the presence of unlabeled G-1-P and sucrose phosphorylase in an isotope-labeled 32P； solution, we found the "P" on G-1-P can also be isotope-labeled after some time. However, maltose phosphorylase cannot do the same. Which of following is true: (A) Sucrose phosphorylase catalyzes a reaction following double-displacement mechanism (B) Sucrose phosphorylase catalyzes a reaction requiring the formation of tertiary complexes (C) Maltose phosphorylase catalyzes a reaction following what is called "Ping-Pong mechanism" (D) Maltose phosphorylase catalyzes a reaction where enzyme is covalently modified during the catalysis though the modification occurs only transiently (E) NAD+-dependent dehydrogenases use a random single-displacement catalytic mechanism