Which of the Following Is NOT a Disadvantage of a Client/server

Multiple Choice

Which of the following is NOT a disadvantage of a client/server network?

A) There is a more complex programming relationship between clients and servers.
B) There are more complex computer and network security issues due to increased numbers of users.
C) System upgrades require upgrading of all clients and servers, regardless of location.
D) The system can be upgraded in small steps.
E) none of the above