Which front-end options are available for each Dell EMC SC4020 controller?

A.
2 FC 16 Gb, 2 FC 8 Gb
4 iSCSI 10 Gb, 4 SAS 12 Gb
B.
2 FC 16 Gb, 4 FC 8 Gb
4 iSCSI 10 Gb, 4 SAS 12 Gb
C.
4 FC 16 Gb, 2 FC 8 Gb
4 iSCSI 10 Gb, 4 SAS 12 Gb
D.
4 FC 16 Gb, 4 FC 8 Gb
4 iSCSI 10 Gb, 4 SAS 12 Gb