(c) (3 pts)LetCOOLSIZE be the size of a refrigerator's cooling compartment (i.e., the part of the refrigerator that keeps food cold but not frozen). REFRSIZE is the refrigerator size and FREZSIZE is the freezer size. Then REFRSIZE = COOLSIZE + FREZSIZE. In the model of refrigerator price, suppose we deleted REFRSIZE (i.e., drop variable REFRSIZE) and inserted the variable COOLSIZE instead. Run a regression to estimate this model in which the variable REFRSIZE is deleted and variable COOLSIZE is included