A patient with nuchal rigidity and headache undergoes lumbar puncture. The CSF contains markedly increased numbers of lymphocytes, leading to a presumptive diagnosis of viral meningitis. Which of the following groups of viruses is most likely to be involved?

A．Adenoviruses
B．Enteroviruses
C．Human papillomaviruses
D．Poxviruses
E．Reoviruses