A Company Needs to Have Their Data Asynchronously Replicated

Multiple Choice

A company needs to have their data asynchronously replicated. They also need to maintain a daily copy of the data for a week at the target side to enable fast recovery of files. They decide to purchase two Isilon clusters. They do not want to spend money unnecessarily. Which licenses must they acquire?

A) SyncIQ license at source and target clusters. SnapshotIQ license at source and target clusters.
B) SyncIQ license at source cluster only. SnapshotIQ license at source cluster only.
C) SyncIQ license at target cluster only. SnapshotIQ license at target cluster only.
D) SyncIQ license at source and target clusters. SnapshotIQ license at target cluster only.