Which three statements about subqueries are true? ()
Asinglerowsubquerycanretrieveonlyonecolumnandonerow.
B. Asinglerowsubquerycanretrieveonlyonerowbutmanycolumns.
C. Amultiplerowsubquerycanretrievemultiplerowsandmultiplecolumns.
D. Amultiplerowsubquerycanbecomparedusingthe";>;";operator.
E. AsinglerowsubquerycanusetheINoperator.
F. Amultiplerowsubquerycanusethe";=";operator.