Introduction:
Brent Crude is a type of crude oil that is widely used as a benchmark for pricing other crude oils. It is named after the Brent oilfield, which is located in the North Sea. The Brent oilfield is situated in a specific region, and this region determines the countries that can claim ownership of the oilfield.

Explanation:
The correct answer is option 'B', which states that Brent Crude is found in parts of the North Sea off the coast of the United Kingdom and Norway. Here's a detailed explanation of why this answer is correct:

1. Brent oilfield: The Brent oilfield is one of the largest oilfields in the North Sea. It was discovered in 1971 and has been a significant source of oil production since then. The oilfield is located in the region between the United Kingdom and Norway.

2. Ownership: The North Sea is divided into different sectors, and each sector is owned by a specific country or group of countries. The Brent oilfield is located in the United Kingdom sector and partially extends into the Norwegian sector. Therefore, both the United Kingdom and Norway can claim ownership of the oilfield.

3. Oil production: The Brent oilfield produces Brent Crude oil, which is a light sweet crude oil. It is known for its low sulfur content and high API gravity, making it easier to refine into various petroleum products. The oil production from the Brent oilfield is an essential component of the global oil market.

4. Benchmark pricing: Brent Crude is widely used as a benchmark for pricing other crude oils. The pricing of Brent Crude is based on the supply and demand dynamics in the North Sea region. It serves as a reference point for traders, refiners, and other market participants to determine the value of other crude oils.

5. Importance: The use of Brent Crude as a benchmark is due to its significant production volume, high quality, and geographical proximity to major refining centers in Europe. Its pricing affects the cost of gasoline, diesel, and other petroleum products worldwide.

Conclusion:
Brent Crude is primarily found in parts of the North Sea off the coast of the United Kingdom and Norway. The Brent oilfield, located in this region, is a vital source of oil production and serves as a benchmark for pricing other crude oils. Its low sulfur content and high API gravity make it a preferred choice for refineries worldwide.