The table below lists nomenclatural categories in column X along with their description in column Y.
| Column X | Column Y | ||
| a. | Homonym | i. | binomial name contains the same epithet for both the genus and species |
| b. | Tautonym | ii. | same binominal name given to a plant and an animal |
| c. | Basionym | iii. | original name of a taxon on which a new combination is based |
| d. | Hemihomonym | iv. | two or more specific or subspecific scientific names with the same spelling, but for different nominal taxa |
Which of the following represents the correct sequence of matches:
1
a - iv, b - iii, c - ii, d - i
2
a - i, b - iv, c - iii, d - ii
3
a - iii, b - ii, c - i, d - iv
4
a - iv, b - i, c - iii, d - ii