Rolling wave planning is a form of progressive elaboration where work to be accomplished in the near term is planned in detail and future work is planned at a higher level of the Work Breakdown Structure. Therefore, work can exist at various levels of detail depending on where it is in the project lifecycle. As more information is known about upcoming events, the higher-level work packages can be decomposed further. Option B templates, which are usually standardized, would not be a very helpful tool for evolving requirements. Option (c) and (d) are not recognized tools and techniques of project time management.