There are two fans out in module PCIe Gen3 I/O. how many PCIe Gen3 expansion drawer expansion slot?

A.
20

B.
6

C.
10

D.
12

Explanation:
Each 6-slot fanout module has six PCIe Gen3 adapter cards slots: Four are type x8 and two are type x16. All of
the adapter slots are hot-pluggable and utilize full-height adapter cards. Each 6-slot fanout module is connected
to its own PCIe3 optical cable adapter, which is installed in the host server. For each 6-slot fanout module that’s
configured, you actually gain five useable slots because the optical cable adapter consumes one slot in the host
server.
http://www.ibmsystemsmag.com/aix/administrator/systemsmanagement/pcie-gen3-expansiondrawers/