A child is diagnosed with impetigo. Pustules are the primary lesions found on this child. Which of the following correctly describes pustules?

Rationale: A. Pustules are small, elevated, pus-filled lesions commonly seen in bacterial infections like impetigo. B. A superficial area of localized edema is a wheal, not a pustule. C. Serous-filled lesions less than 0.5 cm are called vesicles. D. Serous-filled lesions more than 0.5 cm are called bullae.