You are upgrading a project to the latest version of Magento Commerce Cloud and part of the process involves a PHP version upgrade. This is now ready to be tested by the QA Team on the Integration environment.
How do you apply the PHP version upgrade?
A. Change the PHP version in the .magento.app.yaml file and re-deploy
B. SSH into the Integration environment and upgrade PHP manually
C. Change the PHP_VERSION configuration in the .magento.env.yaml file and re-deploy
D. Use the magento-cloud CLI tool to update the PHP_VERSION variable
Correct Answer: A