Refer to the following table about the supply-demand schedule of a good.
Price ($) 6 7 8 9 10 11
Quantity supplied (units)16 20 24 28 32 36
Quantity demanded 28 26 24 22 20 18
If the government imposes a $3 unit tax on the good,
A.the market price will decrease by $3.
B.the total expenditure will increase by $56.
C.the tax revenue will be $24.
D.the price actually received by sellers will be $6.
Answer: B
唔係好明點解係b