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)