OMPT exams are not directly comparable to Dutch WiskundeA/Wiskunde B/ Wiskunde D exams.
OMPT exams were created together with university partners as an alternative math qualification for students with math deficiency. The exams are designed to match university specific study programme admission requirements. For example, OMPT-A and OMPT-F are recommended for economics, OMPT-B for econometrics, OMPT-C for humanities, OMPT-D for STEM and and OMPT-E for social sciences.
However, each university decides which OMPT they accept for certain programmes, the passing grade and the number of attempts allowed by themselves.