The State of Manipur and the State of Nagaland is separated by which of the following hill range?

With which country, Manipur shares its border

With reference to the special provisions made under article 371, consider the following matches:
1. Article 371A - Nagaland
2. Article 371B - Assam
3. Article 371C - Manipur
4. Article 371D - Mizoram
Which of the above matches is / are correct?

With reference to the special provisions made under article 371, consider the following matches:
1. Article 371A - Nagaland
2. Article 371B - Assam
3. Article 371C - Manipur
4. Article 371D - Mizoram
Which of the above matches is / are correct?

With reference to the increasing shortage and price of the black rice in Manipur, consider the following statements:
1. This rice variety is indigenous to Manipur.
2. Anthocyanins are responsible for the rice's coloration.
Which of the above statements is/are correct?