Respuesta :
Answer: Option (a) is correct.
Explanation:
Income elasticity of demand measures the responsiveness of quantity demanded with change in the income level of an individual.
[tex]Income\ elasticity\ of\ demand=\frac{percentage\ in\ quantity\ demanded}{percentage\ change\ in\ income}[/tex]
Income of an individual has a positive relationship with the demand for normal goods and has a negative relationship with the demand for inferior goods.