Universal Containers is about to begin the release of a major project. To facilitate this, they have several sandboxes to make their deployment train. These sandboxes are a mix of preview and non-preview instances. What should the architect recommend?

A. No advice needed, mixing instance types is important for regression testing.
B. Refresh all non-preview sandboxes when the release management team has time.
C. Contact support to rollback the release when Salesforce upgrades the sandboxes.
D. Refresh all non-preview sandboxes during the release preview window.

Suggest answer: D

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