Served Ina, manufactures two products, salad plates and platters, from a joint process. Salad plates are allocated $7.700 of the total joint costs of $29,000. There are 3,100 salad plates produced and 3,100 platters produced each year. Salad plates can be sold at the split-off point for $15.00 per unit, or they can be hand painted for additional processing costs of $8,700 and sold for $18.00 for each deluxe salad plate. If the salad plates are processed further and made into deluxe plates, the effect on operating income would be al al O A. $46,500 net decrease in operating income. O B. $600 net decrease in operating income. O c. $46,500 net increase in operating income D. $600 net increase in operating income