[Retracted] Preorder of Factors Affecting Oil Prices: Fuzzy PROMETHEE Approach

Table 5

Description of criteria.

Criteria	Descriptions
(West Texas intermediate, WTI)	WTI, otherwise called Texas light sweet, is a grade of crude oil used as a benchmark in oil pricing [37]. This grade is portrayed as medium crude oil in light of its generally low thickness and sweet because of its low sulphur content
(Brent)	Brent is also an important benchmark for crude oil pricing [38]. Brent contains around 0.37% of sulphur classifying it as sweet crude, yet not as sweet as WTI. Brent is reasonable for the production of petrol and middle distillates. Historically, price differences between Brent and other index crudes have been founded on physical contrasts in crude oil specifications and short-term variations in supply and demand.
(OPEC Reference Basket)	Besides WTI and Brent, the OPEC Reference Basket is also a benchmark for oil pricing [39]. The OPEC Basket is a weighted average of prices for petroleum blends produces by OPEC members. It is utilized as an imperative benchmark for crude oil prices. OPEC has frequently endeavored to keep the price of the OPEC basket between upper and lower limits, by increasing and decreasing production. This makes the measure essential for market analysts.
(Western Canadian Select, WCS)	WCS is one of North America’s biggest overwhelming crude oil streams. It is an alternative to the Canadian oil and gas industry, and individual firms’ equity prices react to oil price fluctuations [40]. It is an overwhelming mixed crude oil, made for the most part of bitumen mixes with sweet synthetic and condensate diluents and 25 existing streams of both ordinary and flighty. WCS is the benchmark for emerging heavy, high TAN (acidic).