**Core Concept**
Antemortem burns are injuries that occur before death, typically causing significant damage to the skin and underlying tissues. The presence of antemortem burns can be a crucial indicator of the circumstances surrounding a death, particularly in forensic pathology and medicolegal investigations.

**Why the Correct Answer is Right**
Antemortem burns are characterized by the presence of charring, eschar formation, and the presence of blisters or bullae. These changes are a result of the body's inflammatory response to the heat injury. In antemortem burns, the skin is typically red, swollen, and may exhibit signs of infection, such as increased warmth, redness, and swelling. The presence of these signs indicates that the burn occurred while the individual was alive.

**Why Each Wrong Option is Incorrect**
**Option A:** This option may be incorrect, but more information is needed to determine its accuracy. However, in general, antemortem burns can exhibit signs of infection, such as increased warmth, redness, and swelling.

**Option B:** This option is incorrect because eschar formation is a hallmark of antemortem burns. Eschar is a scab-like area of dead tissue that forms after a burn injury.

**Option C:** This option is incorrect because charring is a characteristic of antemortem burns. Charring occurs when the skin is exposed to high temperatures, causing the formation of a black, carbonized crust.

**Option D:** This option is incorrect because blisters or bullae can form in antemortem burns as a result of the body's inflammatory response to the heat injury.

**Clinical Pearl / High-Yield Fact**
When evaluating burns in a forensic context, it's essential to consider the presence of antemortem signs, such as charring, eschar formation, and blisters or bullae, as these can indicate that the burn occurred while the individual was alive.

**Correct Answer:** D.