Suggest the following linear trend equation of an industry's sales: yt = 120 + 12 t where t is measured in years and sales are measured in millions of dollars. Which is the most reasonable conclusion?
A. We would forecast that sales will increase $12 million in the next year
B. We would forecast that sales will increase 12 percent in the next year
C. On the average, sales will increase 12/(120 + 12×10) = 0.05 or 5% next year
D. The year-to-year change will depend on the value of t