Which of the Following Is NOT a Disadvantage of Within-Groups

Multiple Choice

Which of the following is NOT a disadvantage of within-groups designs?

A) There is a potential for order effects.
B) There is a potential for demand characteristics.
C) Depending on the independent variable, these designs are not always possible.
D) All of the above are disadvantages of within-groups designs.
E) None of the above are disadvantages of within-groups designs.