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

Ex Input:
Problem: how many cubes of 8 cm edge can be cut out of a cube of 16 cm edge 
Options: a ) 36 , b ) 2 , c ) 8 , d ) 48 , e ) none of these

Ex Output:
c


Ex Input:
Problem: a string of 13 light bulbs is wired in such a way that if any individual light bulb fails , the entire string fails . if for each individual light bulb the probability of failing during time period t is 0.02 , what is the probability that the string of light bulbs will fail during the time period t ? 
Options: a ) 0.02 , b ) ( 0.02 ) ^ 13 , c ) 1 - ( 0.02 ) ^ 13 , d ) ( 0.98 ) ^ 13 , e ) 1 - ( 0.98 ) ^ 13

Ex Output:
e


Ex Input:
Problem: a , b , c , d , e sitting in a row what is the probability that a & b sitting adjacent . 
Options: a ) 1 / 5 , b ) 2 / 5 , c ) 3 / 5 , d ) 4 / 5 , e ) 6 / 5

Ex Output:

b


