The average fuel efficiency of vehicles sold in the country of Filona during the period 2000–2004 was 25 miles per gallon; the corresponding figure during the period 1995–1999 was 20 miles per gallon. The national average price of gasoline during the period 2000–2004 was $2 per gallon; the corresponding figure during the period 1995–1999 was $1.60 per gallon.
The statements above, if true, best support which of the following conclusions about Filona?
A. The average fuel efficiency of vehicles sold nationwide should reach 30 miles per gallon for the period 2005–2009.
B. The cost of gasoline for an average trip in a vehicle was higher during the period 1995–1999 than during the period 2000–2004.
C. Rising gasoline prices lead consumers to purchase more fuel-efficient cars.
D. The ratio of average fuel efficiency to average price of gasoline from the 1995–1999 period was roughly equal to the ratio from the 2000–2004 period.
E. Consumers spent more money on gasoline during the period 2000–2004 than during the period 1995–1999.