Which of the Following Is NOT One of the Guidelines

Multiple Choice

Which of the following is NOT one of the guidelines for within-group counterbalancing?

A) Each participant must experience each condition more than once.
B) Each treatment must be presented to each participant an equal number of times.
C) Each treatment must occur an equal number of times at each testing or practice session.
D) Each treatment must precede and follow each of the other treatments an equal number of times.