24. A common ancestor with dark green leaves has given rise to four species, G, H, I, and J. G, H, and I have dark leaves； J has mottled leaves. A classification scheme has included G, H, and I but omitted J. This classification scheme would be considered to be: (A) paraphyletic. (B) monophyletic. (C) polyphyletic. (D) semiphyletic. (E) orthophyletic.