Bosc and Gagnon, in chapter 20, indicates, “A motion that is the same in substance as one already decided in the same session is inadmissible”. A portion of this is from an amendment moved, and that should extend to an amendment, as previous chairs have in fact ruled.
Subparagraph (b)(iii) is exactly the same in content as an amendment that was previously defeated by this committee, and I would therefore rule that subparagraph (b)(iii) is inadmissible.