1. b
2. c
3. c
4. a
5. b
6. d
7. c
8. d
9. b
10. d
11. b
12. a
13. b
14. c
15. d
16. c
17. d
18. c
19. d
20. c
21. b
22. a
23. c
24. d
25. b
26. c
27. c
28. d
29. c
30. a
31. b
32. a
33. c
34. c
35. d
36. c
37. b
38. a
39. b
40. d
41. c
42. a
43. d
44. b
45. d
46. b
47. c
48. d
49. a
50. c
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