According to the researchers from the University of California, Berkeley:
						
						-                              A.                                                  words tend to have a single meaning;
 -                              B.                                                  computers can understand peoples social history;
 -                              C.                                                  it is easy to understand words even out of context;
 -                              D.                                                  people can communicate without using actual words;
 -                              E.                                                  social context tends to create problems in communication.