Step 1: Question Interpretation.
The query concerns the individuals credited with the creation or contribution to Mwktwi, requiring identification of the true authors within the Kokborok framework.
Step 2: Answer Identification.
- A. Nitai Acharya is a significant contributor to the Mwktwi compilation.
- B. Suranjan Kundu Choudhury is also associated with Mwktwi.
- C. Shantimoy Chakraborty has also made contributions to Mwktwi.
Step 3: Option Analysis.
- (1) A, B, C inclusive: This option is validated, as all three listed individuals have contributed to the work.
- (2) A, B and D inclusive: This selection is invalidated due to the inclusion of D, who did not contribute to the work.
- (3) C inclusive: This is deemed incorrect as it fails to acknowledge other contributors.
- (4) A, B, C and D: This is deemed incorrect as D was not a contributor.
Step 4: Final Determination.
Consequently, the correct answer is (1) A, B, C inclusive.