A vessel is filled with an ideal gas at a pressure of $10 \mathrm{atm}$ and temperature $27 °\mathrm{C}$. Half of the mass is removed from the vessel and temperature of the remaining gas is increased to $87 °\mathrm{C}$. Then the pressure of the gas in the vessel will be

• A

  $5 \mathrm{atm}$
• Correct answer
  B

  $6 \mathrm{atm}$
• C

  $7 \mathrm{atm}$
• D

  $8 \mathrm{atm}$

Hence, the correct answer is option: 'B'.