Which of the following tasks does the system perform during reorder point planning? Note: 3 correct answers

Which of the following tasks does the system perform during reorder point planning? Note: 3 correct answers
A . perform backward scheduling determine the availability dates of purchase aquation
B . recalculate releasement lead time for materials with automatic reorder point planning
C . carry out a lot size calculation for every material with net requirements
D . carry out a net requirement calculation for every material included in planning run
E . check in the planning file entries whether a material must be included in the planning run

Answer: C,D,E