Which of the following is a property of minimum spanning trees?A. They contain the maximum number of edges.B. They are always cyclic.C. They have the minimum total weight among all spanning trees.D. They contain all vertices of the graph.
Question
Which of the following is a property of minimum spanning trees?A. They contain the maximum number of edges.B. They are always cyclic.C. They have the minimum total weight among all spanning trees.D. They contain all vertices of the graph.
Solution
The property of minimum spanning trees is C. They have the minimum total weight among all spanning trees and D. They contain all vertices of the graph.
Here's why:
A. They contain the maximum number of edges - This is incorrect. A minimum spanning tree contains the least number of edges needed to connect all vertices in a graph.
B. They are always cyclic - This is incorrect. A minimum spanning tree is acyclic by definition. If it contained a cycle, an edge could be removed to produce a spanning tree with a lower total weight.
C. They have the minimum total weight among all spanning trees - This is correct. The definition of a minimum spanning tree is a tree that spans all the vertices in a graph and has the smallest possible total edge weight.
D. They contain all vertices of the graph - This is correct. By definition, a spanning tree must contain all vertices of the graph.
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