In this task, you need to answer the given multiple-choice question on the general math. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.

Input: Consider Input: Problem: 8 ^ 100 is divisible by 17 . find the remainder ? 
Options: a ) 10 , b ) 12 , c ) 16 , d ) 18 , e ) 20

Output: c


Input: Consider Input: Problem: how many times digit 5 is used while writing numbers from 100 to 1000 ? 
Options: a ) 648 , b ) 300 , c ) 252 , d ) 225 , e ) 290

Output: e


Input: Consider Input: Problem: if each digit in the set a = { 1 , 2 , 3 , 4 , 5 , 6 , 7 } is used exactly once , in how many ways can the digits be arranged ? 
Options: a ) 4830 , b ) 5040 , c ) 5250 , d ) 5460 , e ) 5680


Output: b