A polyatomic gas \( \left ( \gamma = \dfrac{4}{3} \right ) \) is compressed to \( \dfrac{1}{8} \) of its volume adiabatically. If its initial pressure is \( P_{0} \), its new pressure will be
1
\( 8 P_{o} \)
2
\( 16 P_{o} \)
3
\( 6 P_{o} \)
4
\( 2 P_{o} \)