Compared with self-built servers, which of the following descriptions about the advantages of deploying business on the cloud is wrong?

Cloud workloads are loads that run services on cloud resources, including virtual machines, elastic load balancing, containers, etc., which carry the core of enterprise business.

HUAWEI CLOUD resolution service provides highly available and scalable DNS services, which convert commonly used domain names into IP addresses for computer connections. Cloud DNS supports multiple service types.
Which of the following descriptions about cloud analysis service types is wrong?

Cloud backup service CBR can provide simple and easy-to-use backup services for cloud servers and cloud hard disks. When events such as virus invasion, human error deletion, software and hardware failures, etc. occur, data can be restored to any backup point. Currently, elastic cloud Server backup can be backed up through the "Cloud Server Backup" service and the "Cloud Disk Backup" service.
In the following comparison of the two backups, which items are correct? (Multiple choice)

An Internet company uses Huawei Cloud to deploy its business. It plans to limit the development environment, test environment, UAT environment, and production environment to operate their respective businesses independently.
Which of the following options is most suitable?