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: if a * b * c = ( √ ( a + 2 ) ( b + 3 ) ) / ( c + 1 ) , find the value of 6 * 15 * 3 . 
Options: a ) 8 , b ) 5 , c ) 11 , d ) 3 , e ) 4
Example Output: d

Example Input: Problem: how many numbers between 190 and 580 are divisible by 45 and 6 ? 
Options: a ) 6 , b ) 7 , c ) 8 , d ) 9 , e ) 10
Example Output: a

Example Input: Problem: if 5 a + 7 b = m , where a and b are positive integers , what is the largest possible value of m for which exactly one pair of integers ( a , b ) makes the equation true ? 
Options: a ) 35 , b ) 48 , c ) 69 , d ) 70 , e ) 74
Example Output:
d