The correct answer is A. SOP (Standard Operating Procedure) because SOPs are specifically designed to document roles, responsibilities, workflows, and support expectations for systems and applications within an organization. When deploying a new application, clear documentation is essential to ensure consistent support, escalation, maintenance, and troubleshooting.

The Quentin Docter – CompTIA A+ Complete Study Guide defines SOPs as formal documents that outline who performs specific tasks, how tasks are performed, and when escalation is required. SOPs are commonly used by IT departments to standardize support processes and ensure continuity, especially when multiple technicians or teams are involved.

The Travis Everett & Andrew Hutz – All-in-One Exam Guide explains that SOPs are a key component of operational maturity, ensuring that support staff understand their responsibilities and follow approved procedures when responding to incidents or service requests related to an application.

The Mike Meyers / Mark Soper Lab Manual further clarifies that documents such as NDAs focus on confidentiality, EULAs define usage rights for end users, and DRM is a technical mechanism—not a documentation framework. None of those options describe internal support roles.

Because the scenario explicitly mentions documenting roles and responsibilities, the correct and intended document type is a Standard Operating Procedure, making A the correct answer.