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

Input: Consider Input: Problem: a store has 10 bottles of juice , including 6 bottles of apple juice . in the evening , 6 bottles of juice are sold one by one . what is the probability of selling 4 bottles of apple juice among the 6 bottles ? assume that every bottle has an equal chance of being bought . 
Options: a ) 2 / 5 , b ) 3 / 5 , c ) 2 / 3 , d ) 1 / 2 , e ) 3 / 7

Output: e


Input: Consider Input: Problem: three unbiased coins are tossed . what is the probability of getting at least 2 heads ? 
Options: a ) 1 / 4 , b ) 1 / 2 , c ) 1 / 3 , d ) 1 / 8 , e ) 1 / 6

Output: b


Input: Consider Input: Problem: a meeting has to be conducted with 5 managers . find the number of ways in which the managers may be selected from among 7 managers , if there are 2 managers who refuse to attend the meeting together . 
Options: a ) 6 , b ) 8 , c ) 10 , d ) 11 , e ) 15


Output: d