Econ

D $2.20 ($2.20 per gallon, 420 million gallons) $2.00 ($2.00 per gallon, 460 million gallons) $1.80 ($1.80 per gallon, 500 million gallons) $1.60 ($1.60 per gallon, 550 million gallons) Price ($ per gallon) $1.40 ($1.40 per gallon, 600 million gallons) ($1.20 per gallon, 700 million gallons) $1.20 $1.00 ($1.00 per gallon, 800 million gallons 300 400 500 600 700 800 900 Quantity of Gasoline (millions of gallons) The diagram above shows O A. a demand schedule O B. the law of demand C. as price increases quantity demanded increases O D. all of the above