Which three of the listed statements are true about vSAN deduplication and compression?

Which three of the listed statements are true about vSAN deduplication and compression? (Choose three.)
A. Deduplication and compression can help to provide additional host failure tolerance.
B. Deduplication and compression require at least four hosts.
C. Deduplication and compression reduce redundant data within each disk group.
D. Deduplication and compression results vary based on the types of data stored in a vSAN environment.