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

Example Input: Problem: if a student loses 5 kilograms , he will weigh twice as much as his sister . together they now weigh 104 kilograms . what is the student ' s present weight in kilograms ? 
Options: a ) 70 , b ) 71 , c ) 72 , d ) 73 , e ) 74
Example Output: b

Example Input: Problem: the h . c . f . of two numbers is 23 and the other two factors of their l . c . m . are 13 and 14 . the larger of the two numbers is 
Options: a ) 276 , b ) 299 , c ) 312 , d ) 322 , e ) none
Example Output: d

Example Input: Problem: a certain bag contains 100 balls â € ” 50 white , 25 green , 10 yellow , 7 red , and 8 purple . if a ball is to be chosen at random , what is the probability that the ball will be neither red nor purple ? 
Options: a ) 0.9 , b ) 0.85 , c ) 0.6 , d ) 0.8 , e ) 0.5
Example Output:
b