Two identical vessels A and B with frictionless pistons contain the same ideal gas at the same temperature and the same volume V. The masses of gas in A and B are m_A and m_B respectively. The gases are allowed to expand isothermally to the same final volume 3 V. The change in pressure of the gas in A and B are found to be $∆$P and 1.5 $∆$P respectively. Then

• A

  $9{\mathrm{m}}_{\mathrm{A}}=4{\mathrm{m}}_{\mathrm{B}}$

• B

  $3{\mathrm{m}}_{\mathrm{A}}=2{\mathrm{m}}_{\mathrm{B}}$

• C

  $2{\mathrm{m}}_{\mathrm{A}}=3{\mathrm{m}}_{\mathrm{B}}$

• D

  $4{\mathrm{m}}_{\mathrm{A}}=9{\mathrm{m}}_{\mathrm{B}}$