What Is the Difference Between the Client-Server Architecture and the Three-Tier

Multiple Choice

What is the difference between the client-server architecture and the three-tier architecture?

A) In the three-tier architecture, each tier is a database server.
B) In the client-server architecture, each client program has a presentation layer.
C) The three-tier application must be distributed over all desktops, but client-server does not.
D) The client-server application must reside on a server, but three-tier does not.