Select the best answer:

Traceability should be maintained throughout all levels of systems development documentation. Which option is not a traceability activity?

a) Allocate all system requirements to hardware, software, or manual operations, facilities, interfaces, services, or others as required

b) Ensure that all functional and performance requirements or design constraints, either derived from or flowed down directly to a lower system architecture element, actually have been allocated to that element

c) Ensure that traceability of requirements from source documentation is maintained through the projects life until the verification program is completed and the system is accepted by the customer

d) Provide a test requirement for each mission statement, in order to assure traceability throughout the systems engineering process

e) Ensure that the history of each requirement on the system is maintained and is retrievable