Final answer:
The false statement about UML is that it does not support multi-way relationships, which is incorrect because UML supports n-ary associations.
Step-by-step explanation:
The question asks which statement is false about UML (Unified Modeling Language). The false statement regarding UML within the given options is that UML does not support the multi-way relationships. This is incorrect because UML does indeed support multi-way relationships, also known as n-ary associations, where an association can involve more than two classes.
UML classes are indeed sets of objects with states and behaviors, and UML clearly supports the subclass structures, indicating that it can represent inheritance and polymorphism.