GridLink data sources are designed for use with an Oracle RAC database. By using the Fast Connection Failover (FCF) pattern, GridLink data sources can quickly react when a RAC node goes down. Which two statements are true? (Choose two.) 

Answer options:

A. The Oracle Notification Service is used to notify the data source of changes to RAC nodes.
B. The reaction is quick, because in using FCF all network timeouts are set very low.
C. FCF is faster because it polls and tests connection, freeing the data source from these tasks.
D. FCF requires the use and configuration of a database server in the GridLink data source.
E. You can use any Oracle Thin database driver with a GridLink data source.

AD