Instructions: In this task, you need to answer the given multiple-choice question on geometry. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.
Input: Problem: the length of a rectangle is increased by 25 % and its breadth is decreased by 15 % . what is the effect on its area ? 
Options: a ) 1288 , b ) 1299 , c ) 10625 , d ) 10000 , e ) 2887
Output:
c