Detailed Instructions: In this task, you need to answer the given multiple-choice question on the gain. Gain is the value by which to multiply the input. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.
Problem:Problem: if the annual increase in the population of a town is 10 % and the present number of people is 13000 , what will the population be in 2 years ? 
Options: a ) 15730 , b ) 15240 , c ) 12456 , d ) 11452 , e ) 10002
Solution:
a