Use the Following Information to Answer the Few Questions

Use the following information to answer the few questions.
The herpes viruses are very important enveloped DNA viruses that cause disease in all vertebrate species and in some invertebrates such as oysters.Some of the human ones are herpes simplex (HSV) I and II,causing facial and genital lesions,and the varicella-zoster (VSV) ,causing chicken pox and shingles.Each of these three actively infect nervous tissue.Primary infections are fairly mild,but the virus is not then cleared from the host; rather,viral genomes are maintained in cells in a latent phase.The virus can then reactivate,replicate again,and be infectious to others.
-In 2009,a flu pandemic was believed to have originated when viral transmission occurred from pig to human,thereby earning the designation,"swine flu." Although pigs are thought to have been the breeding ground for the 2009 virus,sequences from bird,pig,and human viruses were all found within this newly identified virus when isolated from humans.What is the most likely explanation of why this virus contained sequences from bird,pig,and human viruses?

A) The virus was descended from a common ancestor of bird, pig, and human flu viruses.
B) The infected individuals happened to be infected with all three virus types.
C) Related viruses can undergo genetic recombination if the RNA genomes mix and match during viral assembly.
D) The human was likely infected with various bacterial strains that contained all three RNA viruses.
E) The swine virus genomic sequences evolved to be similar to bird and human.