Which of the following point is related to requirements and system evolution through scenarios?

• A. Effective communication requires shared experience and shared vocabulary
• B. Evolutionary development facilitates effective user involvement including hands on experience with a real product or prototype
• C. Object technology and client-server architecture are on verge of making prototyping and reuse work for real systems by providing architectural infrastructure
• D. Every iteration results in refined requirements and corrections to components that embody incorrect assumptions