Several Patients Are Waiting to See the Physician in a Walk-In

Several patients are waiting to see the physician in a walk-in clinic. Which of the following patients should be examined first?

A) A twenty-eight-year-old woman who has abdominal pain
B) A twelve-year-old boy who has sunburn on his face and arms
C) A forty-eight-year-old woman whose skin feels clammy and who has had metrorrhagia for the past twenty-four hours
D) A seventeen-year-old girl who is unable to bear weight on her left leg
E) A sixty-one-year-old man who has a swollen face caused by a bee sting