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A. A-1, B-2, C-3, D-4
B. A-4, B-3, C-1, D-2
C. A-3, B-4, C-2, D-1
D. A-2, B-1, C-4, D-3

B. A-4, B-3, C-1, D-2

Service	Description
A. WWW	1. Technology that enables voice communication over the Internet
B. Email	2. On-demand availability of computing resources over the Internet
C. VoIP	3. Electronic messaging system
D. Cloud Computing	4. Collection of interlinked hypertext documents accessible on the Internet