An REA diagrarn for the production cycle, models the relationships between the Job Operations event and the job Operations in entity, and between the Machine Operations event and the Machine Operations List entity, the same way. Those cardinalities between the Event (min, max) and the List entity (min, max) are a. O:M: 1:1 b. 1:N: M:N CM:N; M:N d. 1:1:1:1