Here is a short amino acid sequence mapped as polar (P) and nonpolar (N) and then given a position a-g starting from the first residue. Does this sequence exhibit a heptad repeat? A. Yes, because the hydrophobic residues would align along one face of a helix B. Yes, because the hydrophobic residues are spaced appropriately C. No, because Ser, Gln and Arg are polar D. No, because the hydrophobic residues are not at the a and d positions RVHSLTEQLKSVTDS PNPPNPPPNPPNPPP | | | | | | | | | | | abcdefgabcdefga.