**Core Concept**
Intestinal angina is a clinical syndrome characterized by postprandial abdominal pain, weight loss, and a sense of early satiety. It is a manifestation of chronic mesenteric ischemia, resulting from decreased blood flow to the intestines.

**Why the Correct Answer is Right**
Intestinal angina occurs due to the insufficient blood supply to the intestines, which can be caused by atherosclerotic stenosis of the mesenteric arteries. The mesenteric arteries are responsible for supplying oxygenated blood to the small intestine. When these arteries are narrowed or blocked, the intestines do not receive the necessary oxygen and nutrients, leading to pain and other symptoms.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not accurately describe the symptom complex of intestinal angina. While it is true that abdominal pain can be a symptom of mesenteric ischemia, it is not a specific enough description to be the correct answer.
**Option B:** This option is incorrect because it is a different clinical entity altogether. Acute mesenteric ischemia is a medical emergency that requires immediate attention, whereas intestinal angina is a chronic condition.
**Option C:** This option is incorrect because it is a symptom of a different condition. Bloating and gas are common symptoms of irritable bowel syndrome (IBS), but they are not characteristic of intestinal angina.

**Clinical Pearl / High-Yield Fact**
The key to diagnosing intestinal angina is to recognize the classic symptom complex of postprandial abdominal pain, weight loss, and early satiety. A high index of suspicion is necessary, as the diagnosis can be challenging and requires a combination of clinical evaluation, imaging studies, and angiography.

**Correct Answer:** C. Acute mesenteric ischemia