Kip and Yale run separate mining companies in the same forest. Both pollute the river flowing through the forest with debris from their work. In the table below, the first row shows the current level of debris that makes its way into the river from their work. The following table set out information that shows how much it would cost each company to reduce its pollution by additional increments of 10 pounds. If each mining company is forced to cut its debris in half, the respective cost to Kip and Yale will be
A. $5, $2
B. $10, $4
C. $30, $20
D. $30, $12
B. $10, $4
Environmental & Atmospheric Sciences
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