Rank the following labor supply curves in terms of their elasticities. How does your answer depend on

Question:

Rank the following labor supply curves in terms of their elasticities. How does your answer depend on whether you consider short-run or long-run supply curves? Explain your answer.
a. The supply of economists to the federal government.
b. The supply of taxi drivers to Chicago.
c. The supply of college professors to Ohio State University.