You are managing a project to develop a new software platform for one of your top customers. In past projects, there were often additional, unrequested features added to the scope in order to "wow" the customer, but the stakeholders have made it very clear that this should not be done in this case, as the budget and schedule are very tight. You are also dealing with more limited resources than usual. As you develop your project management plan, you should pay particular attention to which of the following in order to prevent this sort of gold plating from reoccurring?

A Project Charter

B$.$ Cost Management Plan

C$.$ Scope management plan

D$.$ WBS