Adifference is created when there is a timing difference of when an item is included in pretax accounting income and taxable income, whereas a difference is one in which the amount is never included or deductible on the tax return.

Acompetitive market in healthcare would a. overprovide healthcare because the marginal social benefit of healthcare exceeds the marginal benefit perceived by consumers b. underprovide healthcare because it would eliminate medicare and medicaid c. underprovide healthcare because the marginal social benefit of healthcare exceeds the marginal benefit perceived by consumers d. overprovide healthcare because it would be similar to the approach used in canada