Worcester Wallpaper Incorporated manufactures quality wallpaper. They are considering buying the glue for the back of the wallpaper rather than producing it. The costs to manufacture the glue for each roll of wallpaper are as follows: Direct Materials $0.90, Direct Labor $0.50, Variable Factory Overhead $0.45, Fixed Factory Overhead $0.30. The price to purchase the glue (per roll) is $1.75. Should Worcester make or buy the glue, and why should it make or buy the glue