How Are Exemplary Portfolios Different from Progress Portfolios

How are exemplary portfolios different from progress portfolios?

A) Exemplary portfolios represent a student's best work as selected by the student; progress portfolios represent a student's best work as selected by the teacher.
B) Exemplary portfolios organize a student's work by quality; progress portfolios organize a student's work by completion date.
C) Exemplary portfolios highlight a student's performance compared to the student's classmates; progress portfolios highlight a student's performance compared to a set of criteria.
D) Exemplary portfolios represent a student's best work; progress portfolios are designed to track change in a student's performance over time.