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

Example Input: Problem: a bag contains 3 red , 5 yellow and 4 green balls . 3 balls are drawn randomly . what is the probability that balls drawn contain exactly two green balls ? 
Options: a ) 9 / 16 , b ) 7 / 18 , c ) 12 / 55 , d ) 14 / 67 , e ) 19 / 87
Example Output: c

Example Input: Problem: in how many ways 5 boys and 5 girls can be seated in a row so that boys and girls are alternate ? 
Options: a ) 28400 , b ) 28500 , c ) 28600 , d ) 28700 , e ) 28800
Example Output: e

Example Input: Problem: a question paper has 2 parts , a & b , each containing 10 questions . if a student has to choose 8 from part a & 5 from part b , in how many ways can he choose the questions ? 
Options: a ) 1100 , b ) 1200 , c ) 1235 , d ) 1354 , e ) 1140
Example Output:
e