Concerns Over the High Costs of Some Economic Incentives Have

Concerns over the high costs of some economic incentives have led to the use of

A) gentrification, whereby a subsidized firm must pay interest on incentives for a prescribed number of years.
B) agreements between jurisdictions that result in blackballing firms that fail to live up to their agreements.
C) a referendum, by which the voters decide what incentives are to be extended to firms considering relocating in the jurisdiction.
D) clawbacks, whereby a subsidized firm must repay all or part of a subsidy if the firm fails to deliver on its promises.