Among the following species, identify the isostructural pairs
`[NF_3, NO_3^-, BF_3, H_3O^+, HN_3]`
| A. |
`[NF_3, NO_3^-] and [BF_3, H_3O^+]` |
| B. |
`[NF_3, NH_3] and [NO_3^- and BF_3]` |
| C. |
`[NH_3, H_3O^+] and [NO_3^-, BF_3]` |
 |
| D. |
`[NF_3, H_3O^+] and [HN_3, BF_3]` |