The Nurse in the Emergency Department Receives 4 Clients

The nurse in the emergency department receives 4 clients.  Which client should the nurse see first?

A) Child who is confused and irritable and whose parent claims 2 glyburide pills are missing
B) Child with an abscess on the buttock that is red, swollen, and warm to the touch
C) Child with immune thrombocytopenia who fell off a bike and reports shoulder pain
D) Child with low-grade fever, barking cough, and runny nose who has mild retractions