The tax on a commodity is diminished by 28% but its consumption is increased by 12%. Find the decrease percent in the revenue derived from it? Options.
A) 18 %
B) 19 %
C) 32 %
D) 12 %
E) 52 %

Rationale: "100 * 100 = 10000 72 * 112 = 8064 10000 - - - - - - - 1936 100 - - - - - - - ? = 19.36 % answer : b"
Answer: B