You Have Been Charged with Designing an Effective Computer Interface

You have been charged with designing an effective computer interface for the newest PC that New Millennium Enterprises is designing.The only constraint that has been given to you is that the interface must be "user friendly".What should you keep in mind as you design the interface?

A) The simpler the representation,the more likely people are to understand it.
B) The best systems represent the problem in the way that matches how people represent the problem.
C) Regardless of how you represent the problem it will take a lot of training to get people to be able to use the interface efficiently.
D) The best systems represent the problem in innovative formats so users are able to remember their uniqueness.