Question no : 80 CO Product Costing estimate

In SAP CO, The dates proposed from costing variant during the Material Cost Estimate is used in which of the following:

A)    Stamped the validity period of the Cost Estimate (costing dates from/to)
B)    Basis for determination of the Quantity Structure
C)    Basis for the valuation date for the Materials
D)    Basis for the valuation ate fro the Activities.
E)    Basis for determination of the overhead keys for the Costing Sheet.
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