What tree security is applied to this user within SAP Success factors Workforce Analytics?

SAP SuccessFactors role-based permissions for SAP success factors Workforce Analytics have been enabled and a user is granted multiple roles. Each role assigned to this user has a unique tree security set up .

What tree security is applied to this user within SAP Success factors Workforce Analytics?
A . The role with the least complex tree security
B . The union of all tree security from each role
C . The role with the most complex tree security
D . The user’s primary role tree security

Answer: D