1. Claire Agutter, et al. (2018). VeriSM™: A service management approach for the digital age. Van Haren Publishing.
Page 78, Section 4.4.2, Agile: "Agile is an umbrella term for a number of iterative and incremental software development approaches... Agile approaches are frequently contrasted with ‘waterfall’ or traditional sequential development." This supports the correctness of B and the incorrectness of D.
Page 69, Section 4.4, The Management Mesh: The inclusion of Agile as a key management practice within the VeriSM model's Management Mesh demonstrates that it is integrated with and supportive of service management, not resisted (refuting C) or used in isolation for project management (refuting A). The text states, "The management mesh is a concept that is unique to VeriSM. It provides a flexible approach that can be adapted depending on the requirements for a particular product or service."