[单选题]
A gas with a volume +n6 go qyc;v1nof1 0(voiy 8j1 fwniy.ipzw,en7 $1.0\,cm^3$ and pressure of $1.0\,hPa$ expands through an adiabatic process to $8.0\,cm^3$.
What is the final pressure of the gas in $hPa$?
A. $\frac{1}{32}$
B. $\frac{1}{8}$
C. $\frac{1}{4}$
D. $\frac{1}{2}$
