Which of the Following Is the Best Reason That We

Multiple Choice

Which of the following is the best reason that we have trouble remembering the license plate number of a car that we just passed ten minutes ago?

A) Working memory lasts only a minute or so.
B) License plate numbers are too difficult to remember easily.
C) We probably never encoded the number in the first place.
D) The memory,though present,is too difficult to retrieve except under special circumstances,such as hypnosis or substantial amounts of stress.