The given apparatus is used to study the diffusion of a number of gases at the same temperature and pressure.Which of the following pairs of gases would diffuse into the vacuum at the same speed?[Given: Atomic mass of H=1u, C=12u, N=14u, S=32u, O=16u]

• A. \[\text{N}{{\text{H}}_{\text{3}}}\] and \[{{\text{H}}_{2}}\]
• B. \[\text{CO}\] and\[\text{S}{{\text{O}}_{2}}\]
• C. \[\text{CO}\] and\[{{\text{N}}_{2}}\]
• D. \[\text{N}{{\text{H}}_{\text{3}}}\] and \[{{\text{N}}_{\text{2}}}\]