Which of These Is an Example of What Has Been

Multiple Choice

Which of these is an example of what has been called childhood amnesia?

A) Betty, age 25, can recall only good memories of what happened when she was 4 to 5 years old.
B) Johnny, age 10, has no memory of a family vacation that occurred when he was 2 years old.
C) When faced with a horrible stressor, some people return to an earlier stage of development, such as infancy, for the comfort that it provides.
D) Despite the fact that Alice, age 35, played the piano from ages 3 through 13, she has very little ability to do so now.