Which statement is true regarding external tables?

Which statement is true regarding external tables?

A.
The CREATE TABLE AS SELECT statement can be used to upload data into regular table in the database
from an external table.

B.
The data and metadata for an external table are stored outside the database.

C.
The default REJECT LIMIT for external tables is UNLIMITED.

D.
ORACLE_LOADER and ORACLE_DATAPUMP have exactly the same functionality when used with an external
table.

Explanation:
https://docs.oracle.com/cd/B28359_01/server.111/b28310/tables013.htm