Which combination of port is available on the Cisco SPA 8800 voice gateway?

A.
two station ports (2xFXS)

B.
eight station ports (8xFXS)

C.
four station ports and four trunk ports (4xFXS and 4xFXO)

D.
one station port and one trunk port (1xFXS and 1xFXO)

Explanation:
http://www.cisco.com/en/US/products/ps10446/index.html :
Cisco SPA8800 IP Telephony Gateway with 4 FXS and 4 FXO Ports