The table below gives details of coal production in four different states for the years 2014 to 2018. Observe the table and answer the question below.
| State | 2014 | 2015 | 2016 | 2017 | 2018 |
| A | 84 | 86 | 85 | 82 | 85 |
| B | 168 | 164 | 162 | 163 | 145 |
| C | 178 | 180 | 181 | 182 | 185 |
| D | 86 | 79 | 84 | 76 | 74 |
Coal production in thousands)
For which State has the percentage contribution to the overall coal production NOT dropped even once during the 5-year period? (Percentage calculation rounded off to the nearest integer).
1
State C
2
State A
3
State B
4
State D