Which of the following diagrams represents the cardinality pairs in a situation where goods don't have to be requisitioned,but if they are,requisitions are approved and processed before purchase orders are issued?

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The Answer of Which of the following diagrams represents the cardinality pairs in a situation where goods don't have to be requisitioned,but if they are,requisitions are approved and processed before purchase orders are issued?

Which of the Following Diagrams Represents the Cardinality Pairs in a Situation