Answer: none of the above.
Explanation:
The Engle curve shows the relationship that takes place between the income of a consumer and the quantity of a particular good purchased.
From the question we are informed that the income consumption curve between good x and good y has a negative slope, this implies that good Y is an inferior good and that it has a negative income elasticity.
Also, since the Engle curve of good X has a positive slope, it implies that good X is a normal good.
Therefore, the answer to the question is "none of the above" as all options are true.
Yes, that seems like a prudent decision. Maybe provide more information?
The span of time is 9 months.
