What should a Technical Architect recommend to address this issue?

Universal Containers (UC) is working on a major project and has determined that its approach to a certain feature will no longer work with an upcoming Salesforce platform release (e.g., Winter to Spring).

What should a Technical Architect recommend to address this issue?
A . Continue with the current approach, since Salesforce will rectify the issue prior to updating the production environment to the new platform release
B. Continue development in a non -upgraded sandbox, and have the developer update the API version of the code to the upcoming API version for testing purposes
C. Submit a request to Salesforce to enable the ‘delay upgrade’ feature in their org. Have the UC administrator schedule the upgrade for a later date
D. Determine the developer sandbox upgrade schedule, and have the developer refactor the approach to the feature in the upgraded sandbox

Answer: D