The given set-up shows separation of impurities from water. Select the correct option for figure.
| Process | P | Q | |
| A | Distillation | Water + Salt | Pure water |
| B | Evaporation | Water + Mud | Mud |
| C | Filtration | Water + Salt | Pure water |
| D | Sublimation | Water + Sugar | Water |
options in P and Q should be interchanged/