A.SELECT XM, SA, SD FROM STUD WHERE BETWEEN 20<SA<23;
B.SELECT XM, SA, SD FROM STUD WHERE SA BETWEEN 23 AND 20;
C.SELECT XM, SA, SD FROM STUD WHERE SA NOT BETWEEN 20 AND 23;
D.SELECT XM, SA, SD FROM STUD WHERE SA BETWEEN 20 AND 23;