객관식
Label the degree and parity (even/odd) of each vertex on each graph.
P = 3-odd; Q = 6-even; R = 9-odd; S = 12-even; T = 4-even
P = 3-odd; Q = 6-even; R = 9-odd; S = 12-even; T = 16-even
P = 3-odd; Q = 3-odd; R = 3-odd; S = 3-odd; T = 4-even
P = 2-odd; Q = 3-odd; R = 3-odd; S = 3-odd; T = 4-even