6) The income statement for L Locks is divided by its two product lines, Curling Irons and Straighteners, as follows: Curling Irons Straighteners Total Sales revenue $600,000 S260,000 $860,000 Variable expenses $460,000 $210,000 S670,000 Contribution margin $140,000 $50,000 $190,000 Fixed expenses $90,000 $90,000 S180,000 -$40,000 $10,000 Operating income (loss) $50,000 If fixed costs remain unchanged and L Locks discontinues the Straightener line, how will operating income change? A. Will increase by $50,000 B. Will decrease by $50,000 C. Will increase by $180,000 D. Will decrease by $180,000 sunk cost