21. B,F,G
22. C,D,I
23. A,E
24. C
25. E
26. B,F,G
27. A,E
28. B,F
29. E,F
30. C,D
31. B
32. But the term 'dwarf planet' is confusing if the celestial body being referred to is not a planet.
33. A,C
34. D
35. D
36. B
37. C
38. B
39. C
40. D