The Index of Exposure to Radioactive Waste and the Cancer

The index of exposure to radioactive waste and the cancer mortality rates (deaths per 100,000) were recorded for nine different geographic regions.Use the regression analysis provided below to find a 99% confidence interval for the slope of the regression line. Dependent variable is: Cancer Mortality Rate
R-squared = 85.8%
S = 14.00993 with 9 - 2 = 7 degrees of freedom $$\begin{array} { l l l l l } \text { Variable } & \text { Coefficient } & \text { SE(Coeff) } & \text { t-ratio } & \text { P-value } \\\text { Constant } & 114.7156 & 8.045663 & 14.25807 & 0.00000198 \\\text { Index of Exp } & 9.231456 & 1.418787 & 6.506584 & 0.000332\end{array}$$

A) (5.88,12.59)
B) (4.46,14.00)
C) (4.97,13.49)
D) (4.27,14.20)
E) (5.11,13.35)