Which of the following statements about peer-to-peer applications is false?

a) Centralized P2P applications follow the client/server relationship.
b) In pure P2P applications, it is difficult to determine who is on the network.
c) Centralized P2P applications simply management tasks, such as monitoring user access.
d) All file-sharing applications are pure P2P applications.

d) All file-sharing applications are pure P2P applications.