Oil analysis predict that if the price of oil fails by half, the consumer's purchase price for gasoline made from this oil will also fall by half.
Which one of the following, If true, would cast the most serious doubt on the prediction made by the oil analysts?OPTIONS
[A]. Improved automobile technology and new kinds of fuel for cars have enabled some drivers to use less gasoline.
[B]. Gasoline manufacturers will not expand their profit margins.
[C]. There are many different gasoline companies that compete with each other to provide the most attractive price to consumers.
[D]. Studies in several countries show that the amount of gasoline purchased by consumers initially rises after the price of gasoline has fallen.
[E]. Refining costs, distribution costs, and taxes, none of which varies significantly with oil prices. constitute a large portion of the prices of gasoline.
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