How can you maintain the values for the delivery reminder levels of a purchase order item? Note: There are 3 correct Answers to this question

How can you maintain the values for the delivery reminder levels of a purchase order item? Note: There are 3 correct Answers to this question
A . Enter a purchasing value key in the material master record.
B. Maintain a purchasing value key in customizing for the material group.
C. Enter single reminder periods manually in the purchase order item.
D. Maintain a purchasing value key in customizing for the purchasing group
E. Enter single reminder periods manually in the material master record.

Answer: A,B,C