Concept:Limiting friction depends on the nature of the surfaces in contact, not on relative velocity.
Explanation:The limiting frictional force between two surfaces is the maximum static friction before motion begins.
It is proportional to the normal reaction between the surfaces.
The coefficient of friction depends on the nature of the surfaces in contact.
Roughness, adhesion, and surface conditions determine this coefficient.
It does not depend on the relative velocity between the surfaces.
Cohesive force inside a single material is not the controlling factor for friction between two surfaces.
Thus, only statement II is correct.
Answer:B. II only