Which of the Following Is an Example of an Unaided

Which of the following is an example of an unaided recall test?

A) Saffi was asked to list all the sewing machine ads she remembered seeing in the newest issue of Martha Stewart Living magazine.
B) Azi was shown an ad for Goodyear tires and asked if he had seen the ad before.
C) Bob was asked if he had ever seen a television ad for Dell computers.
D) Jean was asked if she had ever heard a radio ad for Burger King during her commute to and from work.
E) Mandy was shown three ads for Morton Salt and asked to point out which ones she remembered seeing before.