Refer to Figure 9.2. At price 0H and quantity Q1, the deadweight loss is

Which of the following is most likely an example of specialization?

a. People work on an assembly line. b. A restaurant divides up the task of serving meals into a range of jobs like top chef, sous chefs, less-skilled kitchen help, and servers to wait on the tables. c. Only those with medical degrees qualify to become doctors. d. A family decides to grow their own crops.

Once a bond rating is assigned, it:

A. can only change if the rating change is approved by the securities and exchange commission. B. can change as the financial position of the issuer changes. C. can change on the next bond from the issuer but is fixed for the current bond. D. never changes over the life of the bond.