Which Node device design ensures a one-to-one subscription ratio?

Which Node device design ensures a one-to-one subscription ratio?

A.
a QFX3500 Node device with 8 uplinks

B.
a QFX3500 Node device with 10 uplinks

C.
a QFX3600 Node device with 8 uplinks

D.
a QFX3600 Node device with 10 uplinks