Assume There Are Three Hardware Stores, Each Willing to Sell

Multiple Choice

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:

A) House Depot's producer surplus would increase by $4.
B) Lace Hardware Hardware's producer surplus would increase by $3.
C) Bob's Hardware's producer surplus would remain unchanged.
D) All of these statements are true.