What are the correct items in the following descriptions of the design of the CloudFabric intelligent lossless multivariate computing physical network?

What are the correct items in the following descriptions of the design of the CloudFabric intelligent lossless multivariate computing physical network?
A . You can choose a two-layer or three-layer networking architecture based on the scale
B . The number of Spine switches needs to be considered based on the total number of upstream interfaces across all Leaf switches
C . Leaf switches can be deployed independently
D . To ensure high reliability on the access side, the server must be single-homed to the LEAF switch

Answer: A B C