Four students found set of C_p and C_v (in cal/deg mole) as given below. Which of the following set is correct

• A

  ${\mathrm{C}}_{\mathrm{V}}=4,{\mathrm{C}}_{\mathrm{p}}=2$

• B

  ${\mathrm{C}}_{\mathrm{V}}=4,{\mathrm{C}}_{\mathrm{p}}=1$

• C

  ${\mathrm{C}}_{\mathrm{V}}=3,{\mathrm{C}}_{\mathrm{p}}=4$

• D

  ${\mathrm{C}}_{\mathrm{p}}=5,{\mathrm{C}}_{\mathrm{v}}=3$