What is the recommended storage policy to ensure cross-site and local protection using storage as efficiently as possible?

A VxRail Stretched Cluster will have four hybrid nodes at each site.

What is the recommended storage policy to ensure cross-site and local protection using storage as efficiently as possible?
A . PFTT=1
SFTT=0
FTM=Erasure Coding
B . PFTT=1
SFTT=1
FTM=Erasure Coding
C . PFTT=1
SFTT=1
FTM=Mirroring
D . PFTT=0
SFTT=1
FTM=Mirroring