Consider the market for one-bedroom apartment rentals in a city, where landlords (producers) and tenants (consumers) exchange housing services. The monthly market demand is given by = 2000 - 10 and the monthly market supply is given by = 500 + 20, where P is monthly rent per apartment, and Q is thousands of apartments.

a. Quantify the effect of a rent ceiling of $1000 per month on quantity, total surplus, consumer surplus and producer surplus in this market.

b. Suppose monthly market supply is instead = 800 + 14. Without doing any calculation, explain whether the rent ceiling will benefit renters more or less, compared to before.