A customer's total utility (measured in utils) from consuming consecutive slices of pizza is shown in the table below:
| Slice of Pizza | Total Utility (utils) |
|---|---|
| 1 | 25 |
| 2 | 55 |
| 3 | 90 |
| 4 | 130 |
| 5 | 165 |
| 6 | 195 |
| 7 | 215 |
At which slice of pizza does the consumer begin to experience diminishing marginal utility?
3
4
5
6
