Which of the following statements about ECSs are true? (Choose all that apply.)

A. You can view ECS resources on the console

B. You can create and delete ECSs, reinstall and change OSs, and start or stop ECSs

C. You can use public images, private images, or shared images to apply for ECSs

D. You can add and remove extension NICs, add EIPs, attach and detach disks, and create key pairs

Reference: https://support.huawei.com/enterprise/en/doc/EDOC1100062374/40601e95/what-is-image-management-service