Examine the structure of the EMPLOYEES table: EMPLOYEE_ID NUMBER NOT NULL, Primary Key EMP_NAME VARCHAR2(30) JOB_ID NUMBER SAL NUMBER MGR_ID NUMBER References EMPLOYEE_ID column DEPARTMENT_ID NUMBER Foreign key to DEPARTMENT_ID column of the DEPARTMENTS table You created a sequence called EMP_ID_SEQ in order to populate sequential values for the EMPLOYEE_ID column of the EMPLOYEES table. Which two statements regarding the EMP_ID_SEQ sequence are true? （）

A. You cannot use the EMP_ID_SEQ sequence to populate the JOB_ID column.

B. The EMP_ID_SEQ sequence is invalidated when you modify the EMPLOYEE_ID column.

C. The EMP_ID_SEQ sequence is not affected by modifications to the EMPLOYEES table.

D. ny other column of NUMBER data type in your schema can use the EMP_ID_SEQ sequence.

E. The EMP_ID_SEQ sequence is dropped automatically when you drop the EMPLOYEES table.

F. The EMP_ID_SEQ sequence is dropped automatically when you drop the EMPLOYEE_ID column.