7. Consider the following types of information. If this information is immediately and fully reflected in security prices, what form of market efficiency is implied?

a. A company's recent quarterly earnings announcement

b. Historical bond yields

c. Deliberations of a company's board of directors concerning a possible merger with another company

d. Limit orders in a specialist's book

e. A brokerage firm's published research report on a particular company

f. Movements in the Dow Jones Industrial Average as plotted in The Wall StreetJournal