After Receiving Report,which Patient Admitted to the Emergency Department Should

After receiving report,which patient admitted to the emergency department should the nurse assess first?

A) 67-year-old who has a gangrenous left foot ulcer with a weak pedal pulse
B) 58-year-old who is taking anticoagulants for atrial fibrillation and has black stools
C) 50-year-old who is complaining of sudden "sharp" and "worst ever" upper back pain
D) 39-year-old who has right calf tenderness, redness, and swelling after a long plane ride