Monica has found that her contribution margin per hour of time for her highest selling product is $2,500. She wants to dedicate an extra 40 hours a month to this product, but she needs to know the increase in total contribution margin if she does this. The product generally sells for $100 a unit. What would be the increase in total contribution margin for this product?

$62,500

$100,000

$160,000

$78,300