Which of the following countries became the first country in the Caribbean region to adopt India's UPI system?

Which of the following statements is/are correct about Public Interest Litigation (PIL)?
1. It is generally used to safeguard individual interests and not group interests, for which Fundamental Rights have been provided.
2. All Indian citizens or organizations can file a public interest litigation petition 
3. One can file a PIL petition before the supreme court under Article 32 and High courts under Article 226 of the constitution

Consider the following statements and which is/are correct?
1. Nipah virus can be transmitted to humans from animals such as bats or pigs.
2. Fruit bats of the Pteropodidae family are the natural host of Nipah virus.
3. There is treatment and vaccines available for either people or animals and the primary treatment for humans is supportive care.

Which of the following tribes are not native to Nagaland?
1. Angami
2. Ao
3. Gurkhas
4. Lotha
5. Chenchu
6. Rengma
7. Sumi