####57. Match the extraction processes listed in Column I with metals listed in Column II.
$(2006,6$ M)
| Column I | Column II | ||
|---|---|---|---|
| A. | Self-reduction | p. | Lead |
| B. | Carbon reduction | q. | Silver |
| C. | Complex formation and displacement by metal |
r. | Copper |
| D. | Decomposition of iodide | s. | Boron |
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