Three polypeptides, the sequences of which are represented below using the one-letter code for their amino acids, are present in a mixture: 1. ATKNRASCLVPKHGALMFWRHKQLVSDPILQKRQHILVCRNAAG 2....

Three polypeptides, the sequences of which are represented below using the one-letter code for their amino acids, are present in a mixture:
1. ATKNRASCLVPKHGALMFWRHKQLVSDPILQKRQHILVCRNAAG
2. GPYFGDEPLDVHDEPEEG
3. PHLLSAWKGMEGVGKSQSFAALIVILA
Of the three, which one would migrate most slowly during chromatography through:
(a) an ion-exchange resin, beads coated with positively charged groups?
(b) an ion-exchange resin, beads coated with negatively charged groups?
(c) a size-exclusion (gel-filtration) column designed to separate small peptides such as these?
(d) Which peptide contains the ATP-binding motif shown in the following sequence logo?