What is NOT true about a roles and role bindings?

In UML 2.5.1, a role binding (roleBinding) in a CollaborationUse is defined as a Dependency relationship, not an Association. A role binding maps a ConnectableElement (such as a property or port) of a structured classifier to a role (part) defined within the target Collaboration. Because a role binding is a Dependency, statement A is false and thus the correct answer to this negative-query question.

B: This is a correct statement describing the exact purpose and mapping of a role binding within a collaboration use.

C: This is a correct statement; a model element/object can participate in and play roles across multiple collaborations.

D: This is a correct statement; typing a role with an interface defines the required features required from any participant bound to that role.

E: This is a correct statement; one connectable element can be bound to more than one role in a single collaboration occurrence.

- Object Management Group (OMG). (2015). OMG Unified Modeling Language (OMG UML)

Version 2.5.1

Section 11.7.3.1 (CollaborationUse - Semantics)

pp. 217-219. https://www.omg.org/spec/UML/2.5.1/