**Core Concept**
Pancreatic trauma refers to injury to the pancreas, often resulting from severe abdominal trauma, such as that sustained in a motor vehicle accident. The pancreas is a vital organ responsible for producing digestive enzymes, including amylase, and hormones like insulin.

**Why the Correct Answer is Right**
The marked increase in serum amylase level (800 U) indicates pancreatic damage, as amylase is produced by the pancreas. Grey Turner's sign, which refers to discoloration or bruising of the flanks, is a clinical indicator of pancreatic trauma, suggesting bleeding or leakage of pancreatic enzymes into the surrounding tissues. In the context of pancreatic trauma, the pancreas is likely to be injured, leading to leakage of pancreatic enzymes.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as it does not directly relate to pancreatic trauma. While a high white blood cell count may be seen in various abdominal injuries, it is not a specific indicator of pancreatic trauma.

**Option B:** This option is incorrect as it refers to a different condition. Peptic ulcer disease is a condition characterized by ulcers in the stomach or duodenum, typically caused by Helicobacter pylori infection or nonsteroidal anti-inflammatory drugs (NSAIDs). It is not directly related to pancreatic trauma.

**Option C:** This option is incorrect as it is a treatment option for pancreatitis, not a characteristic of pancreatic trauma. While pancreatitis is inflammation of the pancreas, often resulting from gallstones or alcohol abuse, it is a different condition from pancreatic trauma.

**Clinical Pearl / High-Yield Fact**
Grey Turner's sign is a classic clinical indicator of pancreatic trauma, but it may also be seen in other conditions, such as retroperitoneal hemorrhage or severe abdominal injury. It is essential to consider the patient's overall clinical presentation and imaging findings when diagnosing pancreatic trauma.

**Correct Answer:** C.