You consider an industry with numerous very small firms and five large firms. Their market shares are as follows: (7 points)

Company	Market Share
A	30%
B	15%
C	15%
D	5%
E	1%

a. Companies A and B merge, what should the reaction of the DoJ be according to the Agency standards?

b. Consider now that the merger is between companies A and D. What should the reaction of the DoJ be according to the Agency standards? Show your work.

c. Consider now that the merger is between companies A and E. What should the reaction of the DoJ be according to the Agency standards? Show your work.