Linear regression slope significance testing

For the data set below,

x 12.6 13.0 12.8 13.6 13.4 14.2 y 11.6 12.0 11.5 12.2 12.0 12.8

Construct the 95% confidence interval for the slope of the population regression line based on the sample data set given.

A. (0.511, 1.01)

B. (0.474, 1.04)

C. (0.533, 0.983)

D. (0.436, 1.08)