Arrange the following three-dimensional objects in the descending order of their volumes:
- A cuboid with dimensions $\text{10 cm, 8 cm and 6 cm}$
- A cube of side $\text{8 cm}$
- A cylinder with base radius $\text{7 cm}$ and height $\text{7 cm}$
- A sphere of radius $\text{7 cm}$
- $\text{(i), (ii), (iii), (iv)}$
- $\text{(ii), (i), (iv), (iii)}$
- $\text{(iii), (ii), (i), (iv)}$
- $\text{(iv), (iii), (ii), (i)}$