Which of the following is acceptable for accounting for by products?
A、Net realisable value of the by product is deducted from the cost of the main product.
B、Sales value of the by-product is deducted from the cost of the main product.
C、By-product income less post-separation costs is added to the sales of the main product
D、Pre-separation costs are apportioned to the by product to calculate its profit.