The tax on a commodity is diminished by 20% but its consumption is increased by 10%. Find the decrease percent in the revenue derived from it?	Choose the correct answer.
A) 12%	B) 14%	C) 16%	D) 20%	E) 22%
Explanation:   100 * 100= 
<gadget id="calculator">100 * 100</gadget>
<output>10_000</output>
10000   80 * 110= 
<gadget id="calculator">80 * 110</gadget>
<output>8_800</output>
8800   10000------- 1200   100 ------- ?= 12%   12%)
<result>A</result>
The tax on a commodity is diminished by 20% but its consumption is increased by 10%. Find the decrease percent in the revenue derived from it?