Which Would Be the Signature That a Human Virus Was

Multiple Choice

Which would be the signature that a human virus was acquired from a single animal source?

A) All human viruses would form a single clade.
B) Human viruses would evolve according to the molecular clock.
C) Human viruses would be found in multiple places in the phylogenetic tree, interspersed with viruses from other animals.
D) Human viruses would be found at the root of the tree.
E) Phylogenetic analysis cannot be used to make inferences about the origins of human viruses.