Which of the following is true about the portfolio assessment?

A. It is one of the advanced varieties of norm-referenced tests

B. Contains a student's self selected samples of work done in a curricular area

C. Contains subject-teacher's selection of work samples by a student in a curricular area

D. Contains a student's self selected samples to indicate progress achieved in a curricular area

E. It is used by schools for certification of students

Choose the correct option.