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

Input: Consider Input: Problem: the probability that a computer company will get a computer hardware contract is 4 / 5 and the probability that it will not get a software contract is 3 / 5 . if the probability of getting at least one contract is 9 / 10 , what is the probability that it will get both the contracts ? 
Options: a ) 1 / 8 , b ) 2 / 9 , c ) 3 / 10 , d ) 4 / 11 , e ) 5 / 12

Output: c


Input: Consider Input: Problem: find the fraction which has the same ratio to 1 / 13 that 5 / 34 has to 7 / 48 . 
Options: a ) 110 / 1547 , b ) 120 / 1547 , c ) 140 / 1547 , d ) 160 / 1547 , e ) 220 / 1547

Output: b


Input: Consider Input: Problem: the triplicate ratio of 1 : 7 is ? 
Options: a ) 1 : 7 , b ) 1 : 8 , c ) 1 : 343 , d ) 1 : 1 , e ) 1 : 2


Output: c