Which type of oil can be produced by the GRU?

The correct answer is finished furnace oil (diesel) because the GRU, or Grouping and Refining Unit, is specifically designed to process various hydrocarbons to produce middle distillates, which include diesel fuel. Diesel is a common output from refining processes and is derived from the heavier fractions of crude oil through distillation and further processing techniques.

The GRU has the capacity to convert heavier oils into lighter products, making it an efficient unit for producing high-demand fuels such as finished furnace oil or diesel. This also aligns with industry needs for cleaner-burning fuels which are becoming increasingly vital in many markets.

Other options do not accurately reflect the primary outputs of the GRU. Catalytic cracker oil may be produced in a different part of the refining process focused on breaking down heavier fractions into lighter products, whereas light distillate oil refers to products like gasoline that also come from different refining units. Heavy crude oil, on the other hand, is the input material processed rather than a product of the GRU.