Your development team has created a mobile game app. You want to test the new mobile app on Android and iOS devices with a variety of configurations. You need to ensure that testing is efficient and cost-effective. What should you do?
选项：

A: Upload your mobile app to the Firebase Test Lab, and test the mobile app on Android and iOS devices.
B: Create Android and iOS VMs on Google Cloud, install the mobile app on the VMs, and test the mobile app.
C: Create Android and iOS containers on Google Kubernetes Engine (GKE), install the mobile app on the containers, and test the mobile app.
D: Upload your mobile app with different configurations to Firebase Hosting and test each configuration.