2. For the following pairs of graphs either A). Prove that they are isomorphic by appropriately labeling the vertices of the two graphs in such a way that they have the same edge sets, or B). Justify why they are not isomorphic. In each case encircle either the letter A if they are isomorphic, or B if they are not. (a) A B

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Q: (b) 7 8. 4 6

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