If the Government Passes a Law Requiring Sellers of Mopeds

If the government passes a law requiring sellers of mopeds to send $200 to the government for every moped they sell,then

A) the supply curve for mopeds shifts downward by $200.
B) sellers of mopeds receive $200 less per mopeds than they were receiving before the tax.
C) buyers of mopeds are unaffected by the tax.
D) None of the above is correct.