For the Questions Which Follow,there Are Six Cities (City 1-City

Multiple Choice

For the questions which follow,there are six cities (City 1-City 6) serviced by a particular airline.Limited routes are available,and the distances for each of these routes are presented in the table below.
-Which routes should be traveled?

A) 1-2,2-3,3-5,5-6
B) 1-2,2-3,3-4,4-6
C) 1-2,2-5,5-6
D) 1-4,4-6
E) None of the above