In the Following Statements About Metaphor, the Appropriate One Is

In the following statements about metaphor, the appropriate one is:

A) Metaphors are only helpful to expert users of computers;
B) Metaphors refer to the unorganized knowledge that is relevant to a task;
C) Metaphors help users overcome cognitive limitations in complex tasks;
D) The picture inserted in a MS Word file is an example of metaphor;
E) Metaphors are built on concepts that users are not familiar with.