Find the Critical Value or Values Of $\chi ^ { 2 }$

Multiple Choice

Find the critical value or values of $\chi ^ { 2 }$ based on the given information.
- $$\begin{array} { l } \mathrm { H } _ { 1 } : \sigma < 0.629 \\\mathrm { n } = 19 \\\alpha = 0.025\end{array}$$

A) 8.907
B) 7.015
C) 8.231
D) 31.526