2. (20 points) For parts a and b, either draw a graph with the specied properties or explain why no such graph exists (Note that the graph may have loops or multiple edges connecting vertices, each loop contributes 2 to the degree). 3. Graph with four vertiees of degrees 1, 5, 3, and 3. b. Graph with four vertiees of degrees 1, 2, 3, and 4