Question: Select the correct statement. A) If an undirected graph G is 3-regular, then Gmust have an Euler circuit. B) If an undirected graph G is

Select the correct statement.

A) If an undirected graph G is 3-regular, then Gmust have an Euler circuit.

B) If an undirected graph G is connected, then Gmust have an Euler circuit.

C) If an undirected graph G is 4-regular, then Gmust have an Euler circuit.

D) If an undirected graph G does not have any isolated vertices, then Gmust have an Euler circuit.

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