A Major Disadvantage of Comparative Scales Would Be Which of the Following

Multiple Choice

A major disadvantage of comparative scales would be which of the following?

A) Halo or carryover effects are reduced.
B) Respondents bring the same point of reference to a task.
C) The resulting data measures relative differences.
D) Only big differences between objects can be detected.
E) A researcher cannot generalize beyond the objects under study.