Match the scientist(s) to their contribution.
| Column I | Column II |
|---|---|
| (a) Cohen and Boyer | (i) Discovered restriction enzymes, winning the Nobel Prize in 1978 |
| (b) Arber, Smith, and Nathans | (ii) Constructed the first artificial recombinant DNA molecule in 1972 |
| (c) EFB | (iii) A federation that provides a definition of biotechnology |
| (d) First recombinant DNA | (iv) Linked an antibiotic resistance gene with a native plasmid of Salmonella |