What does the Web Session Affinity feature of Active GridLink for RAC provide?（）

• A、It mandates that HTTP sessions must be stored in an Oracle RAC database for the highest  throughput and availability.
• B、It pins a connection to the thread associated with a web session such that subsequent  connection reservations are significantly faster.
• C、It stores a reference to the connection associated with an HTTP session in the session object.
• D、It allows developers to modify how their web application reserves and releases database  connections to allow enhanced performance.
• E、It provides improved performance by associating a database connection with an HTTP session.