Which addition makes the route request complete?

A classmate receives only the route table and this request:

Choose exactly one route with the shortest listed travel time.

Table 1: Routes available for the journey to school.
Route Listed travel time (minutes)
A 18
B 14
C 14

Two routes share the shortest time. Which addition makes the request produce one predictable result, using only the table and no unstated decision rule?

  1. If several routes share the shortest time, choose all those routes.
  2. If several routes share the shortest time, choose the one with the fewest traffic lights.
  3. If several routes share the shortest time, choose the route whose label comes first alphabetically.
  4. If several routes share the shortest time, choose the one with the minimum listed travel time.