What does the Fast Connection Failover feature of Active GridLink for RAC provide?

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What does the Fast Connection Failover feature of Active GridLink for RAC provide?

A. instant notification of a RAC node failure so applications never have to retry a transaction that was sent to a node that failed during the transaction
B. near-instant notification of the failure of a RAC node failure that minimizes the possibility connection to a failed node being provided to an application
C. application level notification of a failed RAC node such that an application can retry a transaction if required
D. faster failover for Multi Datasources E. guaranteed transaction high availability when interacting with an Oracle RAC Database