Given that x represents the number of items and y is the cost in dollars, then which of the following is a correct interpretation of the coefficient of determination which is 89%? a) Approximately 89%...

Given that x represents the number of items and y is the cost in dollars, then which of the following is a correct interpretation of the coefficient of determination which is 89%?

a) Approximately 89% of the data is explained by the least squares regression line.
b) Approximately 89% of the least squares regression line is explained by the data.
c) Approximately 89% of the variation in the cost can be explained by the variation in the number of items purchased.
d) Approximately 89% of the variation in the number of items purchased can be explained by its linear relationship with cost.