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I. If all the weights of the graph are positive, then the minimum spanning tree of the graph is a minimum cost subgraphII.  A subgraph is a graph formed from a subset of the vertices and edges of the original graph. And the subset of vertices includes all endpoints of the subset of the edges. ans.I is true and II is falseI is false and II is trueBoth I and II are falseBoth I and II are true Previous Marked for Review Next

Question

I. If all the weights of the graph are positive, then the minimum spanning tree of the graph is a minimum cost subgraphII.  A subgraph is a graph formed from a subset of the vertices and edges of the original graph. And the subset of vertices includes all endpoints of the subset of the edges. ans.I is true and II is falseI is false and II is trueBoth I and II are falseBoth I and II are true Previous Marked for Review Next

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Solution

Both I and II are true.

Explanation:

I. If all the weights of the graph are positive, then the minimum spanning tree of the graph is indeed a minimum cost subgraph. This is because the minimum spanning tree is a subgraph that connects all vertices in the graph with the minimum possible total edge weight.

II. A subgraph is a graph formed from a subset of the vertices and edges of the original graph. And the subset of vertices includes all endpoints of the subset of the edges. This is the correct definition of a subgraph. Therefore, this statement is also true.

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