In 2008 There Were 200,000 Gas Grills Demanded at a Price

Multiple Choice

In 2008 there were 200,000 gas grills demanded at a price of $500. In 2009 there were more than 200,000 gas grills demanded at the same price. This increase could be the result any of the following EXCEPT

A) an increase in the supply of gas grills.
B) an increase in population.
C) a fall in the price of natural gas, a complement for a gas grill.
D) an increase in income if gas grills are a normal good.