Why do XTO strategies simplify the planning effort for a Master Production Scheduler?

Group of answer choices

A: Final assembly management does the planning, not the master scheduler

B: Since the customer participates in more of the leadtime in XTO strategies, planners can plan at lower levels of the BOM

C: XTO enables more lean$/$JIT production strategies so more work is done based on true customer demand and less work need be done in anticipating what demand could be$.$ This simplifies the level of detailed planning necessary $($functionally and in ERP$)$