Two identical blocks each of mass “M” are tied to the ends of a string and the string is laid over a smooth fixed pulley. Initially the masses are held at rest at the same level. What fraction of mass must be removed from one block and added to the other , so that it has an acceleration of 1/ 5^th of the acceleration due to gravity

• A

  1/10

• B

  1/5

• C

  2/5

• D

  1/20