A sphere, a cube and a thin circular plate all of same material and same mass initially heated to same high temperature are allowed to cool down under similar conditions. Then, the

• A

  plate will cool the fastest and cube the slowest
• B

  sphere will cool the fastest and cube the slowest
• Correct answer
  C

  plate will cool the fastest and sphere the slowest
• D

  cube will cool the fastest and plate the slowest

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