SAR is a highly diverse group of protists defined by DNA similarities determined through whole-genome analysis of various organisms in the group. Which of the following conclusions could be drawn

SAR is a highly diverse group of protists defined by DNA similarities determined through whole-genome analysis of various organisms in the group. Which of the following conclusions could be drawn from this information?
A) SAR is a paraphyletic group
B) SAR is a monophyletic group
C) SAR includes organisms that have different common ancestors
D) the common ancestor of the members of this group arose relatively recently in evolutionary history

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