The Figure Below Shows the Possible Routes from City a to City

Multiple Choice

The figure below shows the possible routes from city A to city M as well as the cost (in dollars) of a trip between each pair of cities (note that if no arc joins two cities it is not possible to travel non-stop between those two cities) . A traveler wishes to find the lowest cost option to travel from city A to city M. Which nodes are the origin and destination for this problem?

A) Node A is the origin, Node I is the destination.
B) Node A is the origin, Node M is the destination.
C) Node B is the origin, Node I is the destination.
D) Node B is the destination, Node I is the origin.
E) Node A is the destination, Node I is the origin.