Insufficient cost structure for positive profit Steps:

• Calculate original revenue: 500 units × $5/unit =$2500.
• Original total costs: direct materials $500 + direct labor$5000 + fixed overheads $4400 =$9900; profit = $2500 -$9900 = -$7400.
• For 600 units, revenue = 600 × $5 =$3000.
• Assuming direct materials and labor variable: materials = $600, labor =$6000, fixed = $4400; total costs =$11000; profit = $3000 -$11000 = -$8000.
• Even assuming labor fixed: total costs = $600 +$5000 + $4400 =$11000; profit still -$8000. Not enough information: Given numbers yield negative profit, but options positive; likely transcription error in selling price or costs.

Final answer: Not enough information.