**Core Concept**
Frostbite is a cold-induced injury to the skin and underlying tissues, resulting from prolonged exposure to freezing temperatures. The pathophysiology involves the formation of ice crystals within the cells, leading to cellular injury and eventually cell death.

**Why the Correct Answer is Right**
The treatment of frostbite involves rewarming the affected area in a controlled manner to prevent further tissue damage. Rewarming should be done slowly and gently, using warm water (not hot water) or a warm compress, to a temperature of around 40°C to 42°C (104°F to 108°F). This helps to prevent the formation of more ice crystals and promotes the restoration of blood flow to the affected area.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because rapid rewarming can cause further damage to the affected tissues, exacerbating the injury.
**Option B:** This option is incorrect because using hot water for rewarming can cause a severe burn, leading to additional complications.
**Option C:** This option is incorrect because it does not address the underlying pathophysiology of frostbite and may not provide effective treatment.

**Clinical Pearl / High-Yield Fact**
It is essential to remember that the "rule of nines" can be used to estimate the extent of frostbite injury, with each arm and leg divided into nine equal parts. This can help guide treatment and predict the potential for recovery.

**Correct Answer:** D. Rewarming the affected area in a controlled manner.