With reference to ancient Indian History, consider the following pairs:
| List I - Literary work | List II - Author |
| 1) Devichandragupta | Bilhana |
| 2) Hammira-Mahakavya | Nayachandra Suri |
| 3) Milinda-panha | Nagarjuna |
| 4) Nitivakyamrita | Somadeva Suri |
How many of the above pairs are correctly matched?