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: a parking garage rents parking spaces for $ 10 per week or $ 25 per month . how much does a person save in a year by renting by the month rather than by the week ?
Options: a ) $ 120 , b ) $ 160 , c ) $ 220 , d ) $ 240 , e ) $ 260

Output: a

Input: Consider Input: Problem: if a ( a - 2 ) = 2 and b ( b - 2 ) = 2 , where a = b , then a + b =
Options: a ) 1 , b ) 2 , c ) 4 , d ) 46 , e ) 48

Output: a

Input: Consider Input: Problem: how many quarters are equal to 5 dollars ?
Options: a ) 1 , b ) 8 , c ) 12 , d ) 20 , e ) 7
Output: d