Suppose Government Officials Have Set an Emissions Tax to Reduce

Suppose government officials have set an emissions tax to reduce pollution.Assume the optimal tax would be $500 but government officials have set the tax equal to $900.At the equilibrium with the $900 tax:

A) there will be too much pollution.
B) the marginal social cost of pollution will be less than $900.
C) the marginal social benefit of pollution will be $900.
D) the marginal social benefit of pollution will be more than $900.