Brenden Industries has five strategic business units (SBUs)—petroleum extraction, groceries, jewelry, telecommunication, and oil clothing. The petroleum extraction unit is costing the company a huge amount of money. It has not earned any profit so far nor will it earn any profit in the future as the oil fields are diminishing and the company has a small share in this market. In the context of the BCG matrix, which of the following categories of SBUs best describes the petroleum extraction unit?

A) Stars
B) Cash cows
C) Question marks
D) Dogs