View the Exhibit and examine the results of two queries executed

View the Exhibit and examine the results of two queries executed in two user sessions from the same client. 　　 　　What accounts for the formatting differences?

A.The NLS LANG environment variable was changed on the database host before starting the second session.

B.The second session connected via the listener but the first session used a local connection.

C.The database character set was changed before executing the second query.

D.The NIS LANG environment variable was changed on the client before starting the second session.

E.The database national character set was changed before executing the second query.

正确答案是D