**Core Concept**
Vinyl chloride is a known human carcinogen that primarily causes liver angiosarcoma through genotoxic and metabolic activation, leading to DNA damage and vascular endothelial cell transformation. It is specifically associated with vascular tumors of the liver, especially in occupational exposure.

**Why the Correct Answer is Right**
Vinyl chloride is metabolized in the liver to chloroethylene oxide, a reactive epoxide that binds to DNA and proteins, causing mutations. This metabolic pathway leads to endothelial cell damage and transformation, resulting in **angiosarcoma**—a malignant tumor of blood vessel endothelium. The liver is the primary site due to first-pass metabolism. This association is well-documented in industrial workers exposed to vinyl chloride.

**Why Each Wrong Option is Incorrect**
Option B: Angiofibroma of nose is a benign, benign vascular tumor of adolescence, not linked to vinyl chloride exposure.
Option C: Hepatomas are benign liver tumors, often associated with hepatitis B or cirrhosis, not vinyl chloride.
Option D: Bladder cancer is primarily linked to aromatic amines (e.g., in tobacco or dyes), not vinyl chloride.

**Clinical Pearl / High-Yield Fact**
Vinyl chloride exposure is a classic example of a **chemical carcinogen causing vascular tumors**—remember: **"Vinyl chloride → Liver angiosarcoma"**. This is a key point in occupational toxicology and pathology.

✓ Correct Answer: A. Angiosarcoma of liver