How do Contact Builder, Data Designer, and Journey Builder interact in SFMC?

• A. Contact Builder defines the data model and the all-contacts domain; Data Designer creates and maintains relationships; Journey Builder consumes related data to determine entry, splits, and personalization.
• B. Journey Builder defines the data model; Data Designer creates emails; Contact Builder controls sending times.
• C. Data Designer handles domain authentication; Journey Builder creates data models; Contact Builder runs campaigns.
• D. Contact Builder handles only contact creation; Journey Builder stores data; Data Designer manages deliverability.

Answer: (A)