+73 Information on model year (since 2000) and annual maintenance costs for a random sample of a particular car model resulted in the regression line: ĉ = 1625 - 44(year). If 83 percent of the variation in maintenance cost is explained by the model year of the car, what is the approximate value of the correlation of coefficient?
A. -.83
B. .91
C. .83
D. -.91
E. .69
