The length of a rectangle is increased by 20% and its breadth is decreased by 20%. What is the effect on its area?  Choose the correct choice from the following choices:  A) 1288  B) 9600  C) 1000  D) 10000  E) 2887
100 * 100= 
<gadget id="calculator">100 * 100</gadget>
<output>10_000</output>
10000   120 * 80= 
<gadget id="calculator">120 * 80</gadget>
<output>9_600</output>
9600   Answer: 9600
<result>B</result>
The length of a rectangle is increased by 20% and its breadth is decreased by 20%. What is the effect on its area?