An 8-Year-Old Boy Is Brought to Your Office by His

An 8-year-old boy is brought to your office by his mother. He has had a slight fever and a sore throat for the past 2 days. He has eight ulcerative lesions in his mouth, three vesicular lesions on his left hand, and five similar lesions on his right foot. The most probable cause of his disease is

A) Coxsackie A virus
B) Human herpes virus 6
C) HSV
D) HPV