In this task, you need to provide the correct option for a given problem from the provided options.

Example Input: Problem: income and expenditure of a person are in the ratio 5 : 4 . if the income of the person is rs . 19000 , then find his savings ? 
Options: a ) 3800 , b ) 3607 , c ) 3608 , d ) 3602 , e ) 3603
Example Output: a

Example Input: Problem: rajat , vikas and abhishek are submitting questions in the ratio 7 : 3 : 2 . if total number of questions submitted by them is 24 . find the number of questions submitted by vikas . 
Options: a ) 3 , b ) 4 , c ) 5 , d ) 6 , e ) 7
Example Output: d

Example Input: Problem: 100 kg of an alloy a is mixed with 200 kg of alloy b . if alloy a has lead and tin in the ratio 5 : 3 and alloy b has tin and copper in the ratio 2 : 3 , then the amount of tin in the new alloy is ? 
Options: a ) 100.6 kg , b ) 120.3 kg , c ) 117.5 kg , d ) 110.8 kg , e ) 114 kg
Example Output:
c