Briefing The Open Group Knowledge

Which pair of the following responses best completes the sentence?

Which pair of the following responses best completes the sentence? Architecture building
blocks ____, where as Solution Building blocks ____

A.
are assembled; are single function components

B.
are single function components; are groups of architecture building blocks

C.
are reusable; are not reusable

D.
define the architecture; provide the existing legacy system

E.
define functionality; define the implementation of functionality