View previous attem- Assume there are three hardware stores, each willing to sell one standard model hammer in a given time period. House Depot could offer a hammer for a minimum of $7. Lace Hardware could offer a hammer for a minimum of $10 Bob's Hardware could offer a hammer for a minimum of $13. If the market price of hammers increased from $9 to $13, producer surplus would: Multiple Choice . increase for each producer, 0 increase only for House Depot, 0 remain unchanged for Bob's Hardware increase by $4 for Lace Hardware