The customer storage system needs to be upgraded. An existing virtual machine has been bound to the host. Which of the following technologies is recommended to upgrade the storage system online?

The customer storage system needs to be upgraded. An existing virtual machine has been bound to the host. Which of the following technologies is recommended to upgrade the storage system online?
A . Virtual machine hot migration to change the host
B . Virtual hot migration changes the host and data storage
C . Unable to meet demand
D . Virtual machine hot migration changes data storage

Answer: D