【已刪除】61. A mixture of four amino acids is separated by using a cation exchanger with an elution gradient of increasing NaCl
solution. What is the correct elution sequence?
(A) Asp, Lys, Arg, Ser
(B) Asp, Ser, Lys, Arg
(C) Asp, Arg, Ser, Lys
(D) Ser, Asp, Arg, Lys
(E) Lys, Arg, Ser, Asp