When is SnapMirror Sync a viable solution?

A.
when the network connection between source and destination provides lowlatency, reliable connectivity

B.
when the network connection between source and destination is established periodically throughout the day, with SnapMirror updates scheduled during the connected periods

C.
when the destination copy is periodically broken away from the source and is used for development work and testing

D.
when the hosts must receive confirmation that the write completed with the lowest possible response time