Why would vSAN mark all disks in the group as failed?

A single disk in a vSAN disk group suffers from an unrecoverable hardware failure. This causes vSAN to set the health status for all disks in the group to Permanent disk loss, indicating disk failure.
Assuming all other disks have not suffered from a hardware failure, why would vSAN mark all disks in the group as failed?
A. The vSAN disk management service has failed.
B. The affected vSphere host is offline.
C. The key management server is offline.
D. Deduplication and compression is enabled on the vSAN cluster.