How many server connect into a 4U HP ProLiant S6500 chassis?

A.
4 x HP ProLiant SL 165s G7

B.
4 x HP BL860c i2

C.
4 x BL460 G7

D.
8 x HP ProLiant SL165s G7

Explanation:
Reference:
http://www.pcconnection.com/IPA/PM/Brands/AMD/Servers/~/media/F787C33A144D4E0DA804D
2092A6E735E.pdf?v=2 (page 4, HP proliant sl165s G7, first bullet)
HP ProLiant SL165s G7
The HP ProLiant SL165s G7 server is part of the HP ProLiant SL6500 family, optimized for scaleout customers and designed to greatly reduce costs, maximize power efficiency (by sharing power
supplies and fans), and maintain total flexibility. The HP ProLiant SL165s G7 is optimized for
applications needing large amounts of memory and I/O expansion such as scale-out, Web 2.0,
and high-performance computing (HPC) environments.
• Form factor: 2P, 1U full-width tray node. Four independent HP ProLiant SL165s G7 servers go
into the 4U HP ProLiant s6500 chassis