What is the expected write behavior to a volume once the new array is added to the same pool as the existing array?

A customer has an HPE Nimble Storage array. They plan to add a second HPE Nimble Storage array to their existing group.

What is the expected write behavior to a volume once the new array is added to the same pool as the existing array?
A . Data will be written to the new array until it is the same percent full as the original array
B . Data will immediately start to alternate writes between the two arrays
C . Data will continue to write to the first array until there is 40% free space available, and then alternate writes between the two arrays
D . Data will be stripped and automatically re-balanced across the two arrays

Answer: A