here are my answers:

1. (ii)
2. (iii)
3. (ii)
4. (ii)
5. (ii)
6. (i)
7. (i)
8. (ii)
9. (iii)
10. (iii)
11. (iii)
12. (i)
13. (iii)
14. (ii)
15. (i)
16. (ii)
17. (i)
18. (iii)
19. (iii)
20. (iii)


Regards,
1919