**Core Concept**
Pulmonary embolism (PE) is a blockage of an artery in the lungs due to a dislodged blood clot. This condition can lead to hypoxemia, respiratory distress, and potentially life-threatening complications. The diagnosis of PE often relies on a combination of clinical presentation, imaging studies, and laboratory tests.

**Why the Correct Answer is Right**
The correct answer will be a symptom or sign that is not typically associated with pulmonary embolism. This could include conditions that are more likely to be caused by other factors, such as cardiac disease or respiratory infections. For example, a patient with a history of hypertension and chest pain may have a myocardial infarction rather than a pulmonary embolism.

**Why Each Wrong Option is Incorrect**
**Option A:**
* This symptom is commonly seen in patients with pulmonary embolism due to the release of inflammatory mediators and the activation of the sympathetic nervous system.

**Option B:**
* This is a classic presentation of pulmonary embolism, often referred to as the "classic triad" of symptoms.
* The sudden onset of dyspnea, chest pain, and tachycardia can be indicative of a large pulmonary embolism.

**Option C:**
* This symptom is not typically associated with pulmonary embolism, as the condition primarily affects the respiratory system rather than the gastrointestinal tract.

**Clinical Pearl / High-Yield Fact**
When evaluating a patient for pulmonary embolism, it's essential to consider the Wells score, which takes into account clinical risk factors and imaging studies to estimate the probability of PE.

**Correct Answer: C.**