What is the approximate value of the correlation coefficient for the given graph? Graph shows line segment plotted on coordinate plane with number of years on horizontal axis and price of the car in thousand dollars on vertical axis. Line segment begins at (0, 35), goes through (1, 30), (2, 25), (3, 20), (4, 15), (5, 10), (6, 5). A. 1 B. 5 C. 3 D. -1