A Mother Brings Her 8-Year-Old Daughter into an Urgent Care

A mother brings her 8-year-old daughter into an urgent care clinic. The child has a dry, flaky, and peeling rash around her mouth. The mother states she has treated the rash with a number of different lotions, but the lesions persist. She is looking for information on how to make her daughter stop licking her lips, as she thinks this is causing the lesions. Upon assessment, the nurse notes circumoral blisters and honey-colored crusts. In the medical history, the mother reports her daughter has not had any other symptoms, including fever, nausea, vomiting, and malaise.
-The provider orders a specimen to be obtained for microbial analysis.What is the most appropriate site to culture in this case?  

A) The lesion itself,since there seems to be a superficial infection.
B) The posterior pharynx,since the tonsils are likely the primary source of infection.
C) The blood,since the infection was probably carried systemically.
D) The urine,since the kidneys are probably removing bacterial casts from the body.