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) 1288 B) 1299 C) 1000 D) 10000 E) 2887
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   Answer: 10000
<result>D</result>
The length of a rectangle is increased by 25% and its breadth is decreased by 20%. What is the effect on its area?