Which statements are true about PL/SQL procedures?

Which statements are true about PL/SQL procedures? (Choose all that apply.)

A.
Users with definer’s rights who are granted access to a procedure that updates a table must be granted access to the table itself.

B.
Reuse of parsed PL/SQL code that becomes available in the shared SQL area of the server avoids the parsing overhead of SQL statements at run time.

C.
Depending on the number of calls, multiple copies of the procedure are loaded into memory for execution by multiple users to speed up performance.

D.
A PL/SQL procedure executing on the Oracle database can call an external procedure or function that is written in a different programming language, such as C or Java.