【单选题】

A management control point can be placed at selected management points (specific components at selected levels)of the WBS above. the work package level. These control points can be ______ .
A．used for rolling wave planning

B．decomposed further to help in creation of work authorization system
C．used for planning known work content that does not have detailed schedule activities
D．used as a basis for planning when associated work packages have not yet been planned