**Core Concept**
The classical lobule of the liver is a fundamental anatomical structure that plays a crucial role in liver function and disease. It is a polyhedral lobule consisting of a central vein surrounded by hepatocytes, Kupffer cells, and sinusoidal endothelial cells.

**Why the Correct Answer is Right**
The classical lobule of the liver is centered around the central vein, also known as the hepatic venule. The central vein receives blood from the sinusoids and directs it to the hepatic veins, which then drain into the inferior vena cava. The hepatocytes surrounding the central vein are arranged in a hexagonal pattern, maximizing the surface area for nutrient exchange and waste removal. The Kupffer cells and sinusoidal endothelial cells also play critical roles in the classical lobule, with the former involved in phagocytosis and the latter regulating the exchange of nutrients and waste.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because the classical lobule is not centered around the hepatic artery. While the hepatic artery does supply the liver with oxygenated blood, it is not a structural component of the classical lobule.

**Option B:** This option is incorrect because the classical lobule is not centered around the portal vein. While the portal vein does supply the liver with nutrient-rich blood, it is not a structural component of the classical lobule.

**Option C:** This option is incorrect because the classical lobule is not centered around the bile canaliculi. While the bile canaliculi do play a crucial role in the liver's excretory function, they are not a structural component of the classical lobule.

**Clinical Pearl / High-Yield Fact**
It is essential to remember that the classical lobule is a functional unit of the liver, and its structure and function are crucial for understanding liver disease and dysfunction. The central vein plays a critical role in the classical lobule's function, and damage to this area can lead to liver dysfunction and disease.

**Correct Answer: B. The portal triad (artery, vein, and bile duct) is located at the periphery of the classical lobule, not the central vein.**