You are designing a deployment technique for your applications on Google Cloud. As part of your deployment planning, you want to use live traffic to gather performance metrics for new versions of your applications. You need to test against the full production load before your applications are launched. What should you do?

A. Use A/B testing with blue/green deployment. B. Use canary testing with continuous deployment. C. Use canary testing with rolling updates deployment. D. Use shadow testing with continuous deployment.