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

Input: Consider Input: Problem: water consists of hydrogen and oxygen , and the approximate ratio , by mass , of hydrogen to oxygen is 2 : 16 . approximately how many grams of oxygen are there in 162 grams of water ? 
Options: a ) 16 , b ) 72 , c ) 112 , d ) 128 , e ) 144

Output: e


Input: Consider Input: Problem: log 3 n + log 15 n what is 3 digit number n that will be whole number 
Options: a ) 3375 , b ) 7292 , c ) 8291 , d ) 3929 , e ) 2727

Output: a


Input: Consider Input: Problem: if the ratio of s . i earned on certain amount on same rate is 4 : 5 . what is the ratio of time ? 
Options: a ) 1 : 2 , b ) 6 : 9 , c ) 4 : 5 , d ) 2 : 3 , e ) not possible to calculate


Output: c