Your community wants to increase the use of primary care services for indigent groups. The consensus question is: Would dropping the copay for such services aid that goal? Which of the following information would help with that decision?

i) Price elasticity of demand for primary care services.

ii) Data on economies of scale in the health care industry.

iii) Prices of goods and services associated with illnesses they are trying to prevent

iv) Direct costs associated with primary care services.