Which SELECT statement should you use to extract the year from the system date and display it in the format "1998"?（）

A.SELECT TO_CHAR(SYSDATE,'yyyy')   FROM dual;

B.SELECT TO_DATE(SYSDATE,'yyyy')   FROM dual;

C.SELECT DECODE(SUBSTR(SYSDATE, 8), 'YYYY')   FROM dual;

D.SELECT DECODE(SUBSTR(SYSDATE, 8), 'year')   FROM dual;

E.SELECT TO_CHAR(SUBSTR(SYSDATE, 8,2),'yyyy')   FROM dual;