Question: 3. Let G be a planar graph with n vertices, m edges, and f faces. Let e E Ec be an edge of G. How

3. Let G be a planar graph with n vertices, m edges, and f faces. Let e E Ec be an edge of G. How many vertices, edges, and faces can G' = G/e have? This is the graph G with the edge e contracted. Please give your answer as a collection of (n', m', S') triples

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