Answer

1 A 11 B 21 D 31 A

2 C 12 C 22 A 32 B

3 D 13 A 23 D 33 A

4 C 14 A 24 A 34 D

5 D 15 D 25 A 35 D 6 B 16 B 26 B 36 C

7 B 17 D 27 C 37 C

8 B 18 B 28 A 38 C

9 C 19 B 29 D 39 A

10 D 20 C 30 B 40 C