What is bottom-up scheduling?

A.
Team members representing each role generate time estimates and schedules for deliverables. Each team schedule is integrated into a master project schedule.

B.
The program manager estimates the time required for each team member to complete his or her tasks, and then validates those estimates with the team members.

C.
The program manager builds a master project schedule based on industry standards for each task.

D.
The solution manager estimates the time required for each team member to complete his or her tasks, and then validates those estimates with
the team members.