What are some of the properties ofco-production you need to be aware of?

You are modeling co-products in SAP Integrated Business Planning for Supply Chain.

What are some of the properties ofco-production you need to be aware of? Note: There are 2 correct answers to this question
A . The number of co-products that can be defined in the supply model is unlimited.
B . The output coefficient is time-dependent and should be modeled as a time series
C . The relationship between main product and co-product is specified in the production source of supply.
D . Co-production can be modelled only by supply optimizer and finite heuristics

Answer: A, C