Which of the following statements about Kokborok language is incorrect?
1
It is is a Tibeto-Burman language and the official language of the Indian state of Mizoram.
2
It is closely related to the Bodo, Dimasa and Kachari language
3
It does not have a script.
4
It is not one of the recognized official languages of India as per the 8th schedule of the Constitution