问题：

[单选] Which statement is true regarding Dynamic Service Registration？（）

A . Dynamic service registration requires configuration in the listener .ora file.
B . Dynamic service registration can be used only with an Oracle9/instance.
C . Dynamic service registration cannot register a local listener that does not use TCP/IP or port 1521.
D . The PMON background process automatically registers each database instance if the necessary parameters have been set in the database initialization parameter file.