For polymers, match each process with the most suitable application listed.
| Process | Application |
|---|
| P | Extrusion | 1 | Producing complex parts with close tolerance |
| Q | Injection molding | 2 | Producing thermosetting plastic components |
| R | Blow molding | 3 | Producing long uniform sections |
| S | Compression molding | 4 | Producing hollow shapes |