Instructions: 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: Problem: what is the smallest number which when increased by 3 is divisible by 12 , 15 , 35 , and 40 ? 
Options: a ) 837 , b ) 947 , c ) 1027 , d ) 1155 , e ) 1231
Output:
a