It includes the number of bedroom (bedreooms), square footage of the home (sqft_living), the year the house was built (yr_built), a second order term for square footage of the home (sqft_livingSQ), a second order term for the year the house was built (yr_builtSQ), and an interaction between square footage of the home and the year the house was built (yr_builtXsqft_living). Which variables would consider removing? (mark all that apply)