If you want the project planned start date to remain the same despite the start date of the earliest task, what property

[answerhappygod]

If you want the project planned start date to remain the same despite the start date of the earliest task, what property would you disable?

A. Roll up project start date from tasks [com.snc.project.rollup_project_start_date].
B. Max date span into future or past from the current date for the project/project task [com.snc.project.task.check_date_span_years].
C. Retain start on constraint on tasks after adding relations [com.snc.project.allow_start_on_relations].
D. Max duration allowed for a project/project task [com.snc.project.task.max_task_duration].