Popular Sites Like Google and Yahoo! Have Several Computers Assigned

Multiple Choice

Popular sites like Google and Yahoo! have several computers assigned to their host names because:

A) they have operations in different countries.
B) they are registered under several generic top-level domain names.
C) of the disparity in the number of users accessing their sites in different parts of the world.
D) hoarding all information in one server increases the risk of damage in case of natural disasters.
E) it ensures that the load of requests to their sites do not overwhelm a single computer.