**Core Concept**
Beta blockers are a class of medications that inhibit the action of beta-adrenergic receptors in the body, primarily affecting the heart and lungs. They are commonly used to treat cardiovascular disorders such as hypertension, angina, and arrhythmias. Some beta blockers also possess local anaesthetic properties, but not all beta blockers have this effect.

**Why the Correct Answer is Right**
The beta blocker without local anaesthetic effect is **Bucindolol**. This is because Bucindolol is a non-selective beta blocker that primarily targets the beta-1 receptors in the heart, without affecting the beta-2 receptors in the lungs or possessing local anaesthetic properties. It works by blocking the action of epinephrine and norepinephrine on beta-1 receptors, leading to decreased heart rate and contractility.

**Why Each Wrong Option is Incorrect**
* **Option A:** **Propranolol** is a non-selective beta blocker that also has local anaesthetic properties, making it an incorrect choice.
* **Option C:** **Metoprolol** is a selective beta-1 blocker that is commonly used to treat hypertension and angina, but it also has a mild local anaesthetic effect, making it an incorrect choice.

**Clinical Pearl / High-Yield Fact**
When selecting a beta blocker for a patient, it's essential to consider the specific indication and potential side effects, including local anaesthetic effects, which can be beneficial in certain situations but also lead to complications if not monitored properly.

**Correct Answer:** B. Bucindolol.