In FusionCompute, what are the following functions provided by VRM? (Multiple choices)
A . Manage the block storage resources in the cluster.
B . Manage the network resources (IP/VLAN/DHCP) in the cluster and assign IP addresses to the virtual machines.
C . Through the unified management of virtual resources and user data, external services such as elastic computing, storage, and IP are provided.
D . Manage computing resources on the compute nodes.
Answer: ABC