Suppose the current equilibrium wage rate for lifeguards in Houston is $7.85 an hour. A minimum wage law that creates a price floor of $8.50 an hour leads to
◦ a surplus of lifeguards in Houston.
◦ a shortage of lifeguards in Houston.
◦ no changes in the lifeguard market.
◦ a change in the quantity of lifeguards supplied but no change in the quantity of lifeguards demanded.
◦ an increase in the number of lifeguards employed.