3. Consider the concentration statistics for the following US industries in 2007: Industry Number of firms C4 C20 Commercial banking 91 116 32 56 Gasoline stations with 97 508 11 32 convenience stores Hotels and motels 48 108 23 35 Source: Besanko et al. (2013) a) Interpret the meaning of C4 and C20 given above. b) Order the industries by concentration intensity (highest - lowest) and explain why.4. The Herfindhal index of Industry A is 0.5 and of industry B is 0.33 . a) Please calculate the Adelman equivalent number for each industry. b) Explain the meaning of the numbers you obtained in question a. ) Which industry has a higher concentration? Explain