Which one of the following relationships regarding price elasticity coefficient with changes in price and change in total revenue is incorrect?
1
| Elasticity coefficient | Change in price | Change in total revenue |
| e = 0 | Increase/Decrease | Increase/Decrease |
2
| Elasticity coefficient | Change in price | Change in total revenue. |
| e > 1 | Increase/Decrease | Increase/Decrease |
3
| Elasticity coefficient | Change in price | Change in total revenue |
| e = 1 | Increase/Decrease | No change/No change |
4
| Elasticity coefficient | Change in price | Change in total revenue |
| e < 1 | Increase/Decrease | Increase/Decrease |