Which SELECT statement should you use

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