In One Study on Picture Memory, Researchers Showed Participants Pictures

In one study on picture memory, researchers showed participants pictures of typical scenes, such as a bedroom. In the typical scene were some unexpected objects (e.g., a washing machine) . During the test, participants were shown the same scene, with a few changes. Results from this study indicate that:

A) participants rarely notice any changes in the scene
B) only changes to the largest objects (the bed) were noticed
C) changes to the unexpected objects were often noticed
D) changes to the typical objects were noticed