Middletown is designing a new high-speed rail system to connect Downtown, the Airport, and the Mall. The elevated tracks for the rail system will run along the existing roads, that run on a grid as shown below. In addition, a central switching station must be located at one of the intersections.
Where is the optimal location for the switching station?
A. Two blocks north of the Airport.
B. One block north and one block east of the Airport.
C. Two blocks east of Downtown.
D. One block north of the Mall.
E. none of these
Answer: A
Mathematics
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