Correct option is C
The Montevideo Convention outlines four criteria for statehood:
1. Permanent population,
2. Defined territory,
3. Government, and
4. Capacity to enter into relations with other States.
Membership in the United Nations is not a requirement for statehood.
Information Booster: The Convention asserts that statehood is not dependent on recognition by others ("Declarative Theory of Statehood").