Match the metals listed in Group 1 with the most. appropriate extraction routes listed in Group 2.
| Group 1 | Group 2 |
| P. Al | 1. Blast Furnace |
| Q. Ti | 2. Matte Srrielting |
| R. Cu | 3. Electrolysis of Fused Salts |
| S. Fe | 4. Halide Metallurgy |
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