The answer is true because I don't know
In order.
You have to be able to see if its on the left or right side of the midpoint
Bluetooth is the most reasonable answer
1. C
2. B
3. C
4. A
5. A
6. B
7. C
8. D
9. C
10. B
11. D
12. D
13. D
14. A
15. A
16. B
17. A
18. B
19. D
20. B
Some of the ones towards the start may not be right but I gave it a go :)
