In a reversible adiabatic process, the ratio of $$\frac{{{{\text{T}}_1}}}{{{{\text{T}}_2}}}$$ is equal to

A. $${\left( {\frac{{{{\text{p}}_2}}}{{{{\text{p}}_1}}}} \right)^{\gamma - \frac{1}{\gamma }}}$$

B. $${\left( {\frac{{{{\text{p}}_1}}}{{{{\text{p}}_2}}}} \right)^{\gamma - \frac{1}{\gamma }}}$$

C. $${\left( {\frac{{{{\text{v}}_2}}}{{{{\text{v}}_1}}}} \right)^{\gamma - \frac{1}{\gamma }}}$$

D. $${\left( {\frac{{{{\text{v}}_1}}}{{{{\text{v}}_2}}}} \right)^{\gamma - \frac{1}{\gamma }}}$$

Answer: Option B