according ot he directions on a can of frozen orange juice c

according ot he directions on a can of frozen orange juice concentrate,1 can of concentrate is to be mixed with 3cans of water to make orange juice.How many 12-ounce cans of the concentrate are required to prepare 2006-ounce servings of arange juice
a25 b34 c50 d67 d100
看上去蛮幼稚一题,但题意我不能正确理解,