In which two situations will Elastic DRS add another a host to the cluster?

A cloud administrator Is managing a VMware Cloud on AWS environment consisting of a single cluster with six hosts. There have been no changes made to the Elastic DRS configuration.

In which two situations will Elastic DRS add another a host to the cluster? (Choose two.)
A . When availability zone failure occurs
B. When memory utilization reaches 90%
C. When network utilization reaches 90%
D. When CPU utilization reaches 90%
E. When storage utilization reaches 80%

Answer: A,E