Roopak sowed some seeds in his garden and recorded the development of these seeds into form of plants according to the number of day as shown in the following chart:
| Number of days | Length of plant (in cm) |
| 0 | 0 |
| 3 | 1.4 |
| 6 | 5.3 |
| 9 | 9.5 |
| 12 | 10.3 |
| 15 | 10.9 |
During which three days duration, were growth of the plants maximum and minimum respectively?
1
3 - 6, 9 - 12
2
6 - 9, 0 - 3
3
3 - 6, 6 - 9
4
6 - 9, 12 - 15