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'.

Example Input: Problem: find √ ? / 19 = 4 ? 
Options: a ) 76 , b ) 5776 , c ) 304 , d ) 1296 , e ) none
Example Output: b

Example Input: Problem: the product of two positive integers is 1023 and their difference is 2 . what is the bigger number ? 
Options: a ) 29 , b ) 31 , c ) 33 , d ) 35 , e ) 37
Example Output: c

Example Input: Problem: if log 2 x - 5 log x + 6 = 0 , then what would the value / values of x be ? 
Options: a ) 5.3296 , b ) 6.3296 , c ) 7.3296 , d ) 8.3296 , e ) 9.3296
Example Output:
a