With reference ot various volcanoes and their region of eruption, consider the following pairs:
| S. No. | Volcano | Region |
| 1. | Shiveluch Volcano | Russia |
| 2. | Mauna Loa | Tonga Island |
| 3. | Mount Merapi | Indonesia |
| 4. | Mount Yasur | Hawaii |
How many pairs given above is/are correct?
1
Only one pair
2
Only two pairs
3
Only three pair
4
All the four above