A patient with hypothermia is alert and confused, but complains of left arm pain. His friends found him outside, where the patient spent the night after he got drunk and passed out in the cold. It appears as though he has a localized freezing cold injury to the arm in question. In caring for this patient, which of these treatments would be acceptable?

A) Drinking warm water to raise his internal body temperature
B) Ambulation to get warm blood flowing to all areas of his body
C) Placement in a hot shower to expedite the rewarming process
D) Board splint the arm to keep it from moving

D) Board splint the arm to keep it from moving