Where is a typical request in the Cisco UCS XML API placed in the data management engine， and， after the request is confirmed， what is updated？（）

• A、 The request is placed in the transactor queue in FIFO order and the management information tree is updated.
• B、 The request is placed in the replicator and persistifier and the store is updated.
• C、 The request is placed in the data management engine and the application gateway is updated. 
• D、 The request is placed in the buffer queue and the commit buffer queue is updated.