Given Your Knowledge from Previous Chapters,particularly Chapter 14,which of the Genes

Given your knowledge from previous chapters,particularly chapter 14,which of the genes listed is likely to display the most sequence diversity,and why?

A) SSU .rRNA because its ubiquity means evolutionary diversity is inevitable
B) nif because nitrogen fixation may have evolved independently in a wide variety of organisms
C) pmoA becuae both membrane bound and cytoplasmic forms of the enzyme have been identified
D) all of the choices are valid
E) not all choices are valid,but those with validity still do not provide enough information for an evauation to be made