At $\mathrm{T}(\mathrm{K})$, the vapour pressures of two liquids, heptane and octane are $106 \mathrm{kPa}$ and $47 \mathrm{kPa}$ respectively. If $25 \mathrm{~g}$ of heptane and $57 \mathrm{~g}$ of octane form an ideal solution, at $\mathrm{T}(\mathrm{K})$ the vapour pressure of solution in $\mathrm{kPa}$ is :

• Correct answer
  A

  66.66
• B

  76.5
• C

  50.0
• D

  60.0

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