Please Read the Clinical Scenario, and Then Answer the Question

Please read the clinical scenario, and then answer the question that follow to become familiar with the traditional NCLEX question format.
A mother brings her 8-year-old daughter into the clinic where you are a nurse. The girl has a dry, flaky, and peeling rash around her mouth. The mother states that she has tried using numerous lotions, but the lesions persist. She has come here looking for information on how to make her daughter stop licking her lips, as she thinks this is causing the lesions. Upon closer examination, you notice small blisters and honey-colored crusts. You note that the patient is negative for other symptoms, including fever, nausea, vomiting, and general malaise.
-You need to obtain a specimen for microbial analysis.What is the best location to culture from in this case?

A) The lesion itself,since there seems to be a superficial infection.
B) The mouth for sputum,since it is most likely the culprit.
C) The blood,since the infection was probably carried systemically.
D) The urine,since the kidneys are probably flushing the infection from the body.