Answer the question on the basis of the following information. Assume that if the interest rate that businesses must pay to borrow funds were 20 percent, it would be unprofitable for businesses to invest in new machinery and equipment, so investment would be zero. But if the interest rate were 16 percent, businesses would find it profitable to invest $10 billion. If the interest rate were 12 percent, $20 billion would be invested. Assume that total investment continues to increase by $10 billion for each successive 4 percentage point decline in the interest rate. 
Refer to the information. Using i and I to indicate the interest rate and investment (in billions of dollars) respectively, which of the following is the correct tabular presentation of the described relationship?
Definitions:
Opportunity Cost
The cost of forgoing the next best alternative when a choice is made, representing the benefits one misses out on.
Comparative Advantage
The ability of an individual or entity to produce a good or service at a lower opportunity cost than others.
Absolute Advantage
The ability of a country, individual, or group to produce a good or service more efficiently than another entity, using fewer resources.
Car Wash
A facility used to clean the exterior and, sometimes, the interior of motor vehicles.
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