You are a project manager on a super jumbo market project; your planning team has prepared scope, But procurement team is not clear about what type and amount of shuttering material has to order for coming month, you got feedback from execution team, that coming week material is available but rest of month in same pattern material has to be made issued from store, on this basis you have been able to direct procurement manager the required amount of shuttering material. The process activities evolved in this scenario can be termed as:

A.    WBS decomposition

B.    Description of define Scope

C.    Progressive elaboration

D.    Analogous Estimating