Which statement is true with regard to project scheduling?
A. 
Scheduling in plan-based processes does not change with the progress of the project.
B. 
Plan-based processes use an iterative approach for scheduling each phase of the project.
C. 
Scheduling in an agile process involves planning the short-term phases of a project.
D. 
Agile processes require less detail than plan-based processes do in an initial project schedule.