Answer questions a-g for the graph defined by the following sets: ■ N = {1, 2, 3, 4, 5, 6, 7} ■ N0 = {1} ■ Nf = {7} ■ E = {(1, 2), (1, 7), (2, 3), (2, 4), (3, 2), (4, 5), (4, 6), (5, 6), (6, 1)} Also consider the following (candidate) test paths: ■ p1 = [1, 2, 4, 5, 6, 1, 7] ■ p2 = [1, 2, 3, 2, 4, 6, 1, 7] ■ p3 = [1, 2, 3, 2, 4, 5, 6, 1, 7]