Which of the following scenarios would it be most acceptable to do an interpolation using a least-squares regression line? a. residuals follow a linear pattern. b. there's a high positive correlation. c. there's a strong negative correlation, and residuals follow a u-shaped pattern. d. there's no correlation, and residuals are randomly scattered around the y - = 0. e. there's a strong negative correlation, and residuals are randomly scattered around the line y - = 0.