A survey was conducted among 1,800 commuters in a city about their primary commuting methods. The table below displays a summary of the survey results by city sector.
Commuting Methods
| Car | Public Transit | Bicycle | Walk | Total | |
|---|---|---|---|---|---|
| Sector A | 320 | 180 | 50 | 50 | 600 |
| Sector B | 450 | 100 | 30 | 20 | 600 |
| Sector C | 280 | 220 | 70 | 30 | 600 |
| Total | 1050 | 500 | 150 | 100 | 1800 |
Which of the following is closest to the difference between the percentage of commuters from Sector A who use Public Transit and the percentage of commuters from Sector C who use Public Transit?
5%
7%
10%
12%
