A particular Fast Moving Consumer Goods industry in the US has 2 dominant firms, each with 35% market share. Four of the other firms are equal-sized, with 5% market share each. What is true about the HHI index (HHI) of this industry in the US?
a. The HHI exactly equals 2550
b. The HHI at most equals 2550
c. The HHI exactly equals 2575
d. The HHI at least equals 2575
e. The HHI at most equals 2575
f. The HHI at most equals 2650
g. None of the above