Lido manufactures A and B from a joint process (cost = $86,000). 4,000 pounds of A can be sold at split-off for $27 per pound or processed further at an additional cost of $2,000 and then sold for $29 per pound. If Lido decides to process A beyond the split-off point, operating income will:

decrease by $10,000.

increase by $22,000.

increase by $6,000.

increase by $10,000.

decrease by $22,000.