[单选题]Examine the following command; ALTER SYSTEM SET en

AOnly the data definition language (DDL) commands that resulted in errors are logged in the alert log file.

BAll DDL commands are logged in the alert log file.

CAll DDL commands are logged in a different log file that contains DDL statements and their execution dates.

DOnly DDL commands that resulted in the creation of new segments are logged.

EAll DDL commands are logged in XML format in the alert directory under the Automatic Diagnostic Repository (ADR) home.