A retailer spends $500 per month to keep its online shop active and updated. The store acquires shirts at a marginal cost of $5 per shirt. Each shirt sells for a marginal benefit of $10 per shirt. How many shirts would the retailer need to sell for its marginal benefits to be greater than its total costs? Quantity of shirts sold Marginal cost Total cost Marginal benefit 0 SO $500 SO 25 $125 $625 $250 50 $250 $750 $500 75 $375 $875 $750 100 $500 $1,000 $1,000 125 $625 $1,125 $1,250