Which of the following should be inserted in the server boards before mounting the board to the server chassis? (Choose all that apply)

A.
The heat-sink

B.
Internal Cabling

C.
Memory modules

D.
Drives

E.
The processor

Explanation:
Keep in mind that specific components should be securely mounted to server boards before the boards themselves are mounted in the server chassis. These include the heat-sink retainer bracket, the processor, the heat-sink, and the memory module(s).
References:
Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, pp. 251-273.