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'.

Ex Input:
Problem: jerry went to a shop and bought things worth rs . 25 , out of which 30 $ went on sales tax on taxable purchases . if the tax rate was 6 % , then what was the cost of the tax free items ? 
Options: a ) 19 , b ) 19.7 , c ) 21.3 , d ) 21.5 , e ) 21.7

Ex Output:
b


Ex Input:
Problem: alex takes a loan of $ 4,000 to buy a used truck at the rate of 6 % simple interest . calculate the annual interest to be paid for the loan amount . 
Options: a ) 680 , b ) 700 , c ) 240 , d ) 620 , e ) 260

Ex Output:
c


Ex Input:
Problem: ravi and kavi start a business by investing â ‚ ¹ 5000 and â ‚ ¹ 72000 , respectively . find the ratio of their profits at the end of year . 
Options: a ) 2 : 72 , b ) 5 : 72 , c ) 7 : 72 , d ) 1 : 72 , e ) 3 : 72

Ex Output:

b