18.
A:
Documents forming the acts, or records of the acts of the sovereign authority, of official bodies and tribunals, and of public officers, legislative, judicial and executive, of any part of India or of the Commonwealth, or of a foreign country
B:
Public records kept (in any State) of private documents
C:
Both (a) and (b)
D:
Only documents maintained by legislative, judiciary and executive in India.
The answer is: C