Which one of the following is the correct matching of three items and their grouping category?
| Items | Group |
|---|---|
| Cytosine, uracil, thiamine | Pyrimidines |
| Malleus, incus, cochlea | Ear ossicles |
| Ilium, ischium, pubis | Coxal bones of pelvic girdle |
| Actin, myosin, rhodopsin | Muscle proteins |
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