Actual sales values at the split-off point for joint products Y and Z are not known. For purposes of allocating joint costs to products Y and Z, the relative sales value at split-off method is used. An increase in the costs beyond split-off occurs for Product Z, while those of Product Y remain constant. If the selling prices of finished products Y and Z remain constant, the percentage of the total joint costs allocated to Product Y and Product Z will
A. Decrease for Product Y and increase for Product Z.
B. Increase for Product Y and decrease for Product Z.
C. Increase for Product Y and Product Z.
D. Decrease for Product Y and Product Z.