The correct order to have "Six Etiquettes"(A.Birthday matching, B.Presenting wedding gifts, C.Picking a wedding date, D.Presenting betrothal gifts, E. Proposing, F. Wedding ceremony) is:


A、A-D-B-E-C-F
B、E-D-A-C-B-F
C、E-C-D-A-B-F
D、E-A-D-B-C-F