which ports should be used?

You have to install a DS5300 and 2 EXP5000. In order to get the optimal performance and
availability and according to best practices, which ports should be used?

A.
A1, B1, A2 and B2

B.
A1, A2, B3 and B4

C.
A5, A6, B1 and B2

D.
B3, B4, A3 and A4