The table shows the number of units produced of an item by 3 companies in various years. In which of the given years, was the average production by the companies same?
|
Year |
Company A |
Company B |
Company C |
|
2014 |
440 |
400 |
360 |
|
2015 |
400 |
520 |
300 |
|
2016 |
450 |
430 |
520 |
|
2017 |
420 |
330 |
450 |
|
2018 |
500 |
580 |
500 |
1
2015 and 2017
2
2014 and 2017
3
2014 and 2016
4
2014 and 2018