**Core Concept**
Pancreatitis can lead to various forms of cellular injury, including necrosis. The type of necrosis observed in pancreatitis is characterized by the death of pancreatic cells due to enzymatic autodigestion, inflammation, and coagulative necrosis.

**Why the Correct Answer is Right**
In pancreatitis, the release of digestive enzymes, such as trypsin, lipase, and amylase, leads to autodigestion of pancreatic tissue. This results in the activation of proteolytic enzymes, which in turn cause the death of pancreatic cells. The affected area undergoes coagulative necrosis, characterized by the preservation of the cell's outline and the presence of fibrinoid material. This type of necrosis is often accompanied by inflammation and the activation of various cellular pathways, including the unfolded protein response and apoptosis.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because liquefactive necrosis is typically seen in areas with high bacterial load, such as in abscesses, and is not characteristic of pancreatitis.
**Option B:** This option is incorrect because gangrene is a type of necrosis that occurs in areas with reduced blood flow, such as in diabetic foot ulcers, and is not directly related to pancreatitis.
**Option C:** This option is incorrect because caseous necrosis is characteristic of tuberculosis and is not seen in pancreatitis.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that the type of necrosis observed in pancreatitis is often accompanied by the activation of various cellular pathways, including the unfolded protein response and apoptosis, which can contribute to the progression of the disease.

**Correct Answer:** D. Coagulative necrosis