Assuming market demand curve for dragonfruit can be expressed as QD = 220 - 2P - Pb + 0.2Y, where QD is the quantity of dragonfruit demanded, P is the price of an dragonfruit, Pb is the price of a banana, and Y is the average annual household income in thousands of dollars. What is the change in the quantity demanded of dragonfruit if the income increases by $10,000?

Question 2 options:

2 dragonfruit

200 dragonfruit

5 dragonfruit

Not enough information to answer the question.