Check here for instructional material to complete this problem. Let n be the number of oil refineries at t years since 2001. A reasonable model of the number of oil refineries is n = - 3 211+ 133.51. a. What is the slope? What does it mean in this situation? b. What is the n-intercept? What does it mean in this situation? c. Predict the number of refineries in 2013 a. What is the slope? m = What does the slope mean in this situation? O A. It means the number of refineries in 2001 was about 3.21 O B. It means the number of refineries in 2001 was about 133.51. O C. It means that the number of refineries is decreasing by about 3.21 per year. O D. It means that the number of refineries is decreasing by about 133.51 per year. b. What is the n-intercept? [(Type an ordered pair.) What does the n-intercept mean in this situation? O A. It means that the number of refineries is decreasing by about 3.21 per year. O B. It means that the number of refineries is decreasing by about 133.51 per year. O C. It means the number of refineries in 2001 was about 133.51. O D. It means the number of refineries in 2001 was about 3.21 Nex