Detailed Instructions: In this task, you need to answer the given multiple-choice question on the gain. Gain is the value by which to multiply the input. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.
Problem:Problem: what is the value of â ˆ š 64 % ? 
Options: a ) 80 % , b ) 20 % , c ) 40 % , d ) 90 % , e ) 26 %
Solution:
a