Suppose individuals are currently traveling at the efficient level of 1,500 miles. The level of pollution would be:
A.	greater than zero.
B.	zero.
C.	less than zero.
D.	inefficient.
Answer:A
Suppose individuals are currently traveling at the efficient level of 1,500 miles. The level of pollution would be:
A.	greater than zero. B.	zero. C.	less than zero. D.	inefficient.