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 X only

c. Product Y only

d. Product Z only