Which Findings Suggest Most Strongly That the Phyla Illustrated in Fig.2.36

Which findings suggest most strongly that the phyla illustrated in Fig.2.36 may be reorganized and revised in future years?

A) There are 2 phyla of Gram positive bacteria
B) Walless bacteria exist in phylum Firmicutes
C) Proteobacteria consists of five classes while all other phyla have a single class
D) Deinococcus and Actinobacteria share a common ancestor
E) Photosynthetic bacteria are in multiple classes