$A$ $10 \ L$ vessel contains $1 \ mole$ of an ideal gas with pressure of $P \ atm$ and temperature of $T \ K$. The vessel is divided into two equal parts. The pressure (in $atm$) and temperature (in $K$) in each part is respectively:

• A
  $\frac{P}{2}, \frac{T}{2}$
• B
  $\frac{P}{2}, T$
• C
  $P, T$
• D
  $P, \frac{T}{2}$