Heathman Incorporated produces and sells a single product. The selling price of the product is $230.00 per unit and its variable cost is $89.70 per unit. The fixed expense is $308,660 per month. The break-even in monthly dollar sales is closest to: (Round your intermediate calculations to 2 decimal places.) a $791,436 b $535,365 c $506,000 d $308,660