Explanation

West Texas Intermediate (WTI) is a major global benchmark grade of crude oil:

– It is categorized as a light, sweet crude oil due to its relatively low density (high API gravity of around 39.6) and low sulfur content (roughly 0.24%).
– WTI serves as the underlying physical commodity for the New York Mercantile Exchange (NYMEX) oil futures contracts, ranking alongside Brent Crude and Dubai Crude as the primary international oil pricing standards.

Therefore, WTI refers to a grade of Crude oil — Option A.