The length of a rectangle is increased by 25% and its breadth is decreased by 20%. What is the effect on its area?  Choose the correct choice from the following answers:
A) 10000
B) 18999
C) 16990
D) 16007
E) 16991
100 * 100= 
<gadget id="calculator">100 * 100</gadget>
<output>10_000</output>
10000   125 * 80= 
<gadget id="calculator">125 * 80</gadget>
<output>10_000</output>
10000   10000nswer:10000
<result>A</result>
The length of a rectangle is increased by 25% and its breadth is decreased by 20%. What is the effect on its area?