To Increase Efficiency

Multiple Choice

To increase efficiency,

A) taxes are used to overcome both external benefits and external costs.
B) subsidies are used to overcome both external benefits and external costs.
C) subsidies are used to overcome external benefits, and taxes to overcome external costs.
D) taxes are used to overcome external benefits, and subsidies to overcome external costs.
E) public provision used to overcome external benefits, and vouchers to overcome external costs.