Which of the following is NOT a diagrammatic documentation style for requirements?

Requirements documentation generally follows two main styles: text-based and diagrammatic (or model-based).

Data model (A), Use case model (C), and Business process models (D - e.g., UML Activity Diagrams or BPMN) are all forms of diagrammatic documentation, using standardised graphical notation to express requirements.

A User story (B) is a short, simple, text-based statement written in the format: " As a [role], I want [goal] so that [benefit] " . It is a form of text-based requirement documentation used primarily in Agile environments, not a diagrammatic style.

(Reference: BCS Requirements Engineering – Documentation Styles)

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