After Receiving Change of Shift Report,which Patient Admitted to the Emergency

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

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