In which of the following ADM Phases do building blocks become implementation-specific?

Phase A, Architecture Vision, defines the high-level vision and scope, not implementation specifics.

Phase B, Business Architecture, defines the organizational structure and business processes, not implementation details.

Phase C, Information Systems Architectures (Data and Application), defines logical system components, not their specific implementation in projects.

Phase D, Technology Architecture, defines logical and physical technology components but is still prior to the hands-on governance of project implementation.

Phase E, Implementation Governance, is where the architecture definition is translated into actual implementation projects, and building blocks are specified in terms of solution architectures and specific components.