8) Consider the following model for factors affecting income per capita (3 POINTS)Income 2030 + 215 Kinh + 130 Edu +90 Kính Edu + 25 Age 0.25. Age2 Where household income per capita (per month) is measured in thousands of VND; Kinh is a dummy variable (1-Kinh households; 0-ethnic minority households); Edu is a continuous variable (years of education); Kinh Eu is an interaction term; Age is a continuous variable measured in years and Age^2 is the squared term of Age.(A) Please interpret the effect of education on income for ethnic minority households and Kinh households. (1 point)(A) Holding all other factors fixed, how much will income change if the age increases from 20 to 21 years? (1 point)C) What is the turning point for the effect of age on income? In this case, does the quadratic relationship show a diminishing or increasing effect? (1 point