Which of the Following Statements Incorrectly Describes Disadvantages to Between

Which of the following statements incorrectly describes disadvantages to between subjects designs?

A) You can reduce the disadvantages of the design by decreasing the levels of the IV.
B) You can reduce the disadvantages of the design by decreasing the statistical variance.
C) You can reduce the disadvantages of the design by increasing the number of participants.
D) all of the above