Youaredevelopingacustom-collectionclass.Youneedtocreateamethodinyourclass.Youneedtoensuret
A.ThemethodmustreturnatypeofeitherIEnumeratororIEnumerable.
B.ThemethodmustreturnatypeofIComparable.
C.Themethodmustexplicitlycontainacollection.
D.Themethodmustbetheonlyiteratorintheclass.