Which of These Rules Apply When You Add Preemptible Workers

Multiple Choice

Which of these rules apply when you add preemptible workers to a Dataproc cluster (select 2 answers) ?

A) Preemptible workers cannot use persistent disk.
B) Preemptible workers cannot store data.
C) If a preemptible worker is reclaimed, then a replacement worker must be added manually.
D) A Dataproc cluster cannot have only preemptible workers.