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.