Solution
✅ Correct Option: 4
Each region has the same three years, so comparing the three-year totals is enough — no need to divide until the end.
| Region | 2010 | 2011 | 2012 | Total | Average |
|---|---|---|---|---|---|
| A | 121 | 140 | 138 | 399 | |
| B | 125 | 115 | 170 | 410 | |
| C | 125 | 140 | 110 | 375 | |
| D | 105 | 130 | 140 | 375 | |
| E | 140 | 130 | 120 | 390 |
Region B has the largest total at thousand: