A series of figures are given which can be grouped into

A series of figures are given which can be grouped into classes. From the responses, select the groups into which the figures can be classified.

1. 1, 4, 7; 2, 5, 8; 3, 6, 9
2. 1, 4, 5; 2, 6, 8; 3, 7, 9
3. 1, 7, 9; 3, 5, 8; 2, 4, 6
4. 1, 6, 9; 2, 5, 8; 3, 4, 7

As we can see that ,
Figures 1, 4 and 7 → Vessels with lids
Figures 2, 5 and 8 → Kettle like vessels
Figure 3, 6 and 9 → Flowers