Recall the Application About the Causes of Oil Price Increases

Multiple Choice

Recall the Application about the causes of oil price increases to answer the following question(s) . Economist Lutz Kilian examined the importance of supply disruptions to the U.S. oil market by constructing measures of supply disruptions in oil producing countries based on a detailed examination of prior trends in demand and specifications in oil contracts.
-According to this Application, oil price increases may be caused by

A) decreases in world demand.
B) increases in world supply.
C) speculation in oil markets.
D) price ceilings in oil markets.