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

Input: Consider Input: Problem: a bag contains 6 green balls and 8 white balls . if two balls are drawn simultaneously , what is the probability that both balls are the same colour ?
Options: a ) 5 / 14 , b ) 8 / 21 , c ) 12 / 21 , d ) 43 / 91 , e ) 47 / 91

Output: d

Input: Consider Input: Problem: in a college , the ratio of the number of boys to girls is 8 : 5 . if there are 300 girls , the total number of students in the college is
Options: a ) 420 , b ) 520 , c ) 620 , d ) 780 , e ) 820

Output: d

Input: Consider Input: Problem: in a group of 100 people , 50 like reading books , 20 like both reading books and listening songs . how many like listening songs ?
Options: a ) 40 , b ) 50 , c ) 70 , d ) 60 , e ) none
Output: c