60. The structural and functional advantages of protein quaternary association do NOT include: (A) It can improve protein stability by reducing the combined molecular surface- to-volume ratio. (B) It can significantly enhance the efficiency of protein transportation. (C) The combination of different subunits can achieve synergy and function regulation. (D) Because same protein subunits can be assembled to form enzymes of different activities, genes can be used more efficiently. (E) Several functional groups required for the catalytic reaction can be brought together to form a functional enzyme catalytic center NTHU114