The Following Output from MINITAB Presents a Confidence Interval for the Mean

Multiple Choice

The following output from MINITAB presents a confidence interval for the mean difference between matched pairs. $$\begin{array}{l}\begin{array} { r r r c c } & \mathrm { N } & \text { Mean } & \text { StDev } & \text { SEMean } \\\text { Difference } & 14 & 3.2680 & 7.2315 & 1.9327\end{array}\\95 \% \text { CI for mean difference: } ( - 0.907337,7.443337 ) \end{array}$$ How many degrees of freedom are there?

A) 13
B) 14
C) 1.9327
D) 7.2315