Refer to the information provided in Figure 4.4 below to answer the question(s) that follow. 
Figure 4.4
-Refer to Figure 4.4. Assume that initially there is free trade. The price of oil in the United States will increase to $150 per barrel if the United States then imposes ________ tariff per barrel of imported oil.
Definitions:
Consumer Income
The total earnings of an individual or household from all sources, influencing their purchasing decisions.
Maximum Quantity
The highest amount of a product or resource that can be produced, obtained, or allocated under specific conditions.
Units of X
A term used in various contexts to denote a measurement or quantity of a particular item or variable 'X'.
Consumer Income
The total earnings received by consumers from all sources, influencing their spending patterns and ability to purchase goods and services.
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