The following data is available for the Duffy Manufacturing Company for the month of October 2014: Cost of goods manufactured $39863 Finished goods inventory, 11453 beginning Work in process, ending 14000 Finished goods inventory, 4065 ending Gross margin 35% of sales Operating income 17488 What is Duffy's operating expenses for the meath of October 2014? Select one: O a. $42931 Ob. $7955 Oc. $29763 O d. $72694 Check