What should an Architect recommend to maintain quality?

Universal Containers has several concurrent projects building new functionality, fixing bugs, and modifying existing functionality. Management would like features to be available to users as quickly as possible, even if the entire project is incomplete.

What should an Architect recommend to maintain quality?
A . Require developers to deploy completed code and unit tests directly to production
B. Deploy all functionality together to ensure all functionality works together without error
C. Use a spreadsheet to track approved changes that should be released with change sets
D. Utilize automated source control, test, and build systems to test and deploy to production

Answer: D