Which of the Following Statements Is TRUE

Which of the following statements is TRUE?

A) When the price of oil is high, consumers will use oil only for its most valuable uses.
B) When the price of oil is low, consumers will use oil for both valuable and less valuable uses.
C) When the price of oil rises, consumers tend to use oil for uses (for example, transportation) in which there are few substitutes for oil.
D) All of these statements are correct.