Which SQL statements would give the required output?

You need to calculate the number of days from 1st January 2007 till date.
Dates are stored in the default format of dd-mon-rr.
Which SQL statements would give the required output? (Choose two .)

A.
SELECT SYSDATE – ’01-JAN-2007′ FROM DUAL;

B.
SELECT SYSDATE – TO_DATE(’01/JANUARY/2007′) FROM DUAL;

C.
SELECT SYSDATE – TO_DATE(’01-JANUARY-2007′) FROM DUAL;

D.
SELECT TO_CHAR(SYSDATE, ‘DD-MON-YYYY’) – ’01-JAN-2007′ FROM DUAL;

E.
SELECT TO_DATE(SYSDATE, ‘DD/MONTH/YYYY’) – ’01/JANUARY/2007′ FROM DUAL;