can someone please explain in detail how the answer to #64 was received

64. $ 10,000.00 59,000 00 $8,000.00 Total Costs and Total Revenues $7,000.00 $6,000.00 $5,000.00 $4.000.00 $3,000,00 $2,000.00 $1,000.00 - - - Fixed Costs $0.00 50 100 150 200 250 300 350 400 450 500 . Sales Revenue Number of Units Sold -Total Costs What do total revenues equal at the break-even point? Your Correct Answer Answer $2.500 $4,500 $6,500