Subcontractor Deliveries Are Difficult to Schedule with the Critical Chain

Multiple Choice

Subcontractor deliveries are difficult to schedule with the critical chain project methodology because:

A) the project manager cannot force subcontractors to use this project management approach.
B) the feeder buffers for a subcontractor are as much as 50% shorter than for an employee or internal team.
C) subcontractors routinely operate according to calendar delivery dates.
D) the corporate culture of "no blame" does not naturally extend to subcontractors.