At the bottom of a lake where temperature is 7⁰C the pressure is 2.8 atmosphere. An air bubble of radius1 cm at the bottom rises to the
surface. Where the temperature is 27⁰C . Radius of air bubble at the surface is

• A

  3^1/3

• B

  4^1/3

• C

  5^1/3

• D

  6^1/3