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

Input: Consider Input: Problem: what number has a 5 : 1 ratio to the number 9 ? 
Options: a ) 45 , b ) 50 , c ) 88 , d ) 52 , e ) 12

Output: a


Input: Consider Input: Problem: a certain hobby shop sold model cars for $ 5.00 each and model trains for $ 8.00 each . if a customer purchased both cars and trains from the store for a total of $ 31.00 , what total number of cars and trains did the customer purchase ? 
Options: a ) 3 , b ) 4 , c ) 5 , d ) 6 , e ) 7

Output: c


Input: Consider Input: Problem: a bag contains 4 red , 6 blue and 3 green balls . if 3 balls are picked at random , what is the probability that both are blue ? 
Options: a ) 11 / 144 , b ) 12 / 455 , c ) 10 / 143 , d ) 11 / 125 , e ) 14 / 368


Output: c


