Bermuda Triangle Corporation has a joint process that produces three products: X, Y and Z. Each product may be sold at split-off or processed further and then sold. Joint-processing costs for a year amount to $100,000. Other data follows: Product Sales Value at Split-Off Separable Processing Costs after Split-Off Sales Value at Completion X $128,000 $16,000 $160,000 Y 50,000 27,000 76,000 Z 25,600 20,000 40,000 To maximize profits, the corporation should process ________ further. Select one: a. Products X, Y and Z b. Product Z only c. Product X only d. Product Y only