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

Input: Consider Input: Problem: two numbers are in the ratio 3 : 4 . if their l . c . m . is 72 . what is sum of the numbers ? 
Options: a ) 42 , b ) 56 , c ) 76 , d ) 84 , e ) 85

Output: a


Input: Consider Input: Problem: the ratio between the number of passengers travelling by i and ii class between the two railway stations is 1 : 50 , whereas the ratio of i and ii class fares between the same stations is 3 : 1 . if on a particular day rs . 1,325 were collected from the passengers travelling between these stations , then what was the amount collected from the ii class passengers ? 
Options: a ) rs . 750 , b ) rs . 1000 , c ) rs . 850 , d ) rs . 1250 , e ) none of these

Output: d


Input: Consider Input: Problem: up to 20 , how many no . are odd and prime both ? 
Options: a ) 9 , b ) 5 , c ) 6 , d ) 7 , e ) 8


Output: d