Which of the Following Statements About Mental Models, Appropriate

Multiple Choice

Which of the following statements about mental models, appropriate:

A) Mental models help users overcome cognitive limitation in complex tasks;
B) Mental models are human representations of a future hospital for patients with mental problems;
C) Mental models provide a summary of the user characteristics of a system;
D) Mental models are estimates of mental level of users of a device;
E) Mental models are non-executable.