In the given (V - T) diagram, what is the retation between pressures ${\mathrm{P}}_1 \mathrm{and} {\mathrm{P}}_2$? 

• A

  ${\mathrm{P}}_2 = {\mathrm{P}}_1$

• B

  ${\mathrm{P}}_2 >\hspace{0.17em}{\mathrm{P}}_1$

• C

  ${\mathrm{P}}_2 <\hspace{0.17em}{\mathrm{P}}_1$

• D

  Cannot be predicted