Use the Information Below to Answer the Following Questions

Multiple Choice

Use the information below to answer the following questions.
Consider the following shortest path problem where node 1 is the starting node and node 6 is the destination node.

-Refer to the figure.What is the constraint associated with node 6?

A) X₆₄ + X₆₅ - X₄₆ - X₅₆ = +1
B) X₆₄ + X₆₅ - X₄₆ - X₅₆ = 0
C) X₄₆ + X₅₆ - X₆₄ - X₆₅ = +1
D) -X₆₄ - X₆₅ = -1
E) -X₄₆ + X₅₆ = 0