The next best step in the management of the 30-month-old boy with a 2-day history of sore throat, decreased appetite, fever, and examination findings of a red oropharynx with many small vesicles on the uvula, soft palate, and tonsillar pillars, tonsils slightly red bilaterally, and no cervical lymphadenopathy or rashes would likely be:
a) Throat culture
b) Rapid strep test
c) Complete blood count (CBC)
d) Symptomatic treatment