In 2000 there were 200,000 gas grills demanded at a price of $500. In 2001 there were more than 200,000 gas grills demanded at the same price. This increase could be the result any of the following...

In 2000 there were 200,000 gas grills demanded at a price of $500. In 2001 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) an increase in income if gas grills are a normal good.
D) a fall in the price of natural gas, a complement for a gas grill.