GATRA, the Greater Attleboro-Taunton Regional Transit Authority, Serves Six Cities

Multiple Choice

GATRA, the Greater Attleboro-Taunton Regional Transit Authority, serves six cities (City 1-City 6) . While there are many restrictions (primarily roads on which they may not travel) , they do have some choice of routes. The distances between cities, along permitted routes, are presented below.

-What is the shortest route?

A) 1-3, 3-5, 5-6
B) 1-2, 2-3, 3-4, 4-5, 5-6
C) 1-3, 3-4, 4-5, 5-6
D) 1-2, 2-3, 3-5, 5-6