Which project types in the SAP Ariba Supplier Management Portfolio use matrix-based assignments? Note: There are 2 correct answer to this question

Which project types in the SAP Ariba Supplier Management Portfolio use matrix-based assignments? Note: There are 2 correct answer to this question
A . Supplier registration projects
B . Supplier qualification projects
C . Engagement Risk projects
D . Modular questionnaire projects

Answer: A B