Which statement is true regarding client-server database connectivity?
A. A remote connection uses Interprocess Communication (IPC).
B. A loopback connection can be made with either the APPC or TCP/IP protocol enabled.
C. A remote connection is established between a DB2 client in a different location from the database server.
D. A DB2 client running a lower version of DB2 can establish a local connection to a server running on a newer version.