The price of commodity X increases by 30 cents every year, while the price of commodity Y increases by 20 cents every year. If in 2001, the price of commodity X was $4.20 and the price of commodity Y was $4.50, in which year will commodity X cost 90 cents more than the commodity Y?	Options
A) 2010	B) 2011	C) 2012	D) 2013	E) 2014
The cost of commodity X increases by 10 cents per year relative to commodity Y.   The price of X must gain 30 + 90 = $1.20 cents on commodity Y, which will take 12 years.   The answer is 2013.
<result>D</result>
The price of commodity X increases by 30 cents every year, while the price of commodity Y increases by 20 cents every year. If in 2001, the price of commodity X was $4.20 and the price of commodity Y was $4.50, in which year will commodity X cost 90 cents more than the commodity Y?