The Phase 1 of DITSCAP C&A is known as Definition Phase. The goal of this phase is to define the C&A level of effort, identify the main C&A roles and responsibilities, and create an agreement on the method for implementing the security requirements. The Phase 1 starts with the input of the mission need. This phase comprises three process activities: Document mission need Registration Negotiation Answer: D is incorrect. Initial Certification Analysis is a Phase 2 activity.