單選或多選: a. {a, c, h, i, k} is a subset of V(G2) b. {d, f, b, c, h, g} is a subset of V(G2) c. G2 is a connected graph Od. In_Degree of g is 4 Oe. c is adjacency to g Of. h is adjacency from b Og. Out Degree of d is 3

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Minimum Spanning Tree

A spanning tree is a sub-graph of a connected, undirected graph. It has all the vertices of a graph with the minimum possible number of edges. If a vertex is skipped, then it will not be a spanning tree. The edges of a spanning tree may or may not have weights.