Examine the following command that is used to create a table:
Which two statements are true about the effect of the above command? (Choose two.)
A. A CHECK constraint is created on the OID column
B. A NOT NULL constraint is created on the OID column
C. The ORDERS table is the only object created in the USERS tablespace
D. The ORDERS table and a unique index are created in the USERS tablespace
E. The ORDERS table is created in the USERS tablepsace and a unique index is created on the OID column in the SYSTEM tablespace