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Which one of the following price patterns is most indicative of an efficient market given two announcements concerning the operations and plans of that firm? Select one: b

a. B. 10, 11, 12, 11, 10, 9, 8, 8

b. C. 10, 15, 13, 12, 6, 7, 8, 8

c. A. 10, 10,12, 12, 8, 8, 8, 8

d. D. 10, 13, 12, 12, 7, 8, 9, 8

e. E. 10, 10, 10, 10, 10, 10, 10, 10