The tax on a commodity is diminished by 20% and its consumption increased by 15%. The effect on revenue is?	Choose the correct choice from the following
A) 9% decrease
B) 8% decrease in revenue
C) 6% decrease
D) 1% decrease
E) 2% decrease
100 * 100= 
<gadget id="calculator">100 * 100</gadget>
<output>10_000</output>
10000   80 * 115= 
<gadget id="calculator">80 * 115</gadget>
<output>9_200</output>
9200   -----------   10000-----------800   100-----------?=&gt; 8% decrease   Answer: 8% decrease in revenue
<result>B</result>
The tax on a commodity is diminished by 20% and its consumption increased by 15%. The effect on revenue is?