________: a fixed tax (e.g., a license fee) irrespective of the level of output used by regulatory agencies to eliminate or reduce profit of a monopoly

What happens to your purchasing power if inflation is less than you anticipated?

A) It decreases. B) It won't change much. C) It increases. D) It devalues your net worth.

When using panel data and in the presence of endogenous regressors

A) the TSLS does not exist. B) you do not have to worry about the validity of instruments, since there are so many fixed effects. C) the OLS estimator is consistent. D) application of the TSLS estimator is straightforward if you use two time periods and difference the data.