A mixture of Arginine, Phenylalanine and Histidine was fractionated using cation exchange chromatography at neutral pH. The amino acids were eluted with an increasing salt gradient. Identify the correct order of elution.
(A) Arginine, Histidine, Phenylalanine
(B) Phenylalanine, Histidine, Arginine
(C) Histidine, Phenylalanine, Arginine
(D) Arginine, Phenylalanine, Histidine
(A) Arginine, Histidine, Phenylalanine
(B) Phenylalanine, Histidine, Arginine
(C) Histidine, Phenylalanine, Arginine
(D) Arginine, Phenylalanine, Histidine
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