Instructions: In this task, you need to provide the correct option for a given problem from the provided options.
Input: Problem: from a container having pure milk , 10 % is replaced by water and the process is repeated twice . at the end of the second operation , the milk is ?
Options: a ) 50 % , b ) 60 % , c ) 55 % , d ) 75 % , e ) 81 %
Output:
e