please answer all parts ASAP

Suppose, a researcher estimated the following log-linear import demand function of a particular good that is imported from China. Ln O, = 2.456-0.872 Ln P, + 0.125Ln P, s+ 1.108 Ln Y, Here O, is the quantity of import (in the USD), P is the price of the imported good (in the USD), PS is the price of the substitute good in the USA (in the USD), and ), is the total income of the USA (in the USD). a. Interpret the estimated coefficients of P. , PS , and Y . (15) b. What type of good (Normal, Inferior, Luxury) is the imported commodity? Explain your answer. (10) c. What type of elasticity does the commodity have with respect to its imported price? Explain your answer (10) d. What type of elasticity does the good have with respect to US income? Explain your