Texts: Problem 2 (Dijkstra's Algorithm) (30 Points):
Let T be a tree constructed by Dijkstra's algorithm in the process of solving the single-source shortest-paths problem for a weighted connected graph G.
a. True or false: T is a spanning tree of G?
b. True or false: T is a minimum spanning tree of G?
Hints:
If a statement is true, please use a proof method to prove it is true.
If a statement is false, please provide a counterexample.