What Did the Scientists Conclude from the Experiments on MreB

What did the scientists conclude from the experiments on MreB and Mbl?

A) That these genes have arisen multiple times over millions of years
B) That these genes arose independently in prokaryotes
C) That these genes are not similar to eukaryotic actin
D) That these genes are identical to eukaryotic tubulin
E) That these genes arose before prokaryotes and eukaryotes diverged