Concept:
The Sixth Schedule of the Constitution provides special provisions for administration of tribal areas in certain North-Eastern states.
These areas are governed through Autonomous District Councils.
Step 1: Examine each pair carefully.
• Meghalaya -- Garo Hills District \(\checkmark\)
• Assam -- Karbi-Anglong District \(\checkmark\)
• Mizoram -- Chakma District \(\checkmark\)
• Tripura -- North Cachar Hills District \(\times\)
Step 2: Understand the incorrect pair.
North Cachar Hills District belongs to:
\[
\text{Assam}
\]
and not Tripura.
Therefore, statement D is incorrect.
Step 3: Identify the correct combinations.
Correct statements are:
\[
A, B, C
\]
Step 4: Match with the options.
The correct option is:
\[
\boxed{\text{A, B, C Only}}
\]