**Core Concept**
Premature Ventricular Beats (PVBs) are abnormal heartbeats originating from the ventricles, outside the normal sinus node pathway. They can be a sign of underlying cardiac issues, such as ischemia or structural heart disease.

**Why the Correct Answer is Right**
PVBs occur due to ectopic activity in the ventricles, often triggered by factors like increased sympathetic tone, electrolyte imbalances, or myocardial ischemia. The ventricles can then contract prematurely, disrupting the normal cardiac rhythm. **Option A** describes a false statement about PVBs, which we will identify below.

**Why Each Wrong Option is Incorrect**
**Option B:** This option is true as PVBs can be a sign of underlying cardiac disease, such as coronary artery disease or cardiomyopathy.
* **Option C:** This option is also true as PVBs can be associated with electrolyte imbalances, particularly hyperkalemia or hypokalemia.
* **Option D:** This option is true as PVBs can be influenced by factors like caffeine, nicotine, or certain medications.

**Clinical Pearl / High-Yield Fact**
One key point to remember is that PVBs can be a sign of underlying cardiac pathology, so a thorough evaluation of the patient's cardiac history and physical examination is crucial in determining the underlying cause.

**Correct Answer:**
.