Which strategy should be used to achieve this goal?

A site administrator has determined that the site needs to upgrade all vSAN clusters to 7.0 U1. The vSAN administrator wishes to complete the update in the shortest amount of time possible. All virtual machines are assigned a storage policy where the “Failures to tolerate” is set to one or higher.
Which strategy should be used to achieve this goal?
A. Disable de-duplication and compression prior to the upgrade.
B. Perform a complete update, omitting the on-disk format update.
C. Select the “No data migration” maintenance mode option.
D. Update only select, mission-critical clusters.