**Core Concept**
Rhabdomyolysis is a serious syndrome characterized by the breakdown of skeletal muscle tissue, leading to the release of myoglobin and other muscle proteins into the bloodstream. This can cause damage to the kidneys, muscles, and other organs.

**Why the Correct Answer is Right**
Rhabdomyolysis is typically caused by severe muscle injury, which can result from various factors such as trauma, overuse, certain medications, or infections. The breakdown of muscle tissue leads to an increase in serum creatine kinase (CK) levels, a hallmark of the condition. Additionally, patients with rhabdomyolysis often present with muscle weakness, pain, and a characteristic brownish discoloration of the urine, known as myoglobinuria.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it is not a feature of rhabdomyolysis. In fact, patients with rhabdomyolysis often have decreased urine output, which can exacerbate kidney damage.
**Option B:** This option is incorrect because it is a common presentation of rhabdomyolysis. Myoglobinuria is a characteristic feature of the condition, resulting from the breakdown of muscle tissue and release of myoglobin into the bloodstream.
**Option C:** This option is incorrect because it is a potential complication of rhabdomyolysis. The condition can cause acute kidney injury (AKI) due to the accumulation of myoglobin and other muscle proteins in the kidneys.

**Clinical Pearl / High-Yield Fact**
One important aspect to remember about rhabdomyolysis is that early recognition and treatment are crucial in preventing complications such as AKI. Aggressive fluid resuscitation and management of electrolyte imbalances are essential in the management of this condition.

**Correct Answer: A. Decreased urine output.