The cross elasticity of demand measures the responsiveness of the quantity demand of a particular good to changes in the price of

its substitutes and its complements

its substitutes but not complements

neither substitutes nor it complements

its complements but not its subititutes

Which about the RAND Health Insurance is not correct

Coinsurance is the manipulation in this randomized control trial study

The utilizations among different coinsurance groups in both outpatient and inpatient show exactly the same patterns

The health outcomes among all coinsurance groups showed only very little differences

Randomized control trial is the golden design to prove casual relationship