A country produces only ice cream and cake in the quantities and prices listed below. Use 2011 as the base year. Year Pric e o f Ice Cream Quantit y of Ic e Cream Pric e o f Cake Quantit y of Cake 2011 $2.00 200 $10 40 2012 $2.30 250 $14 50 2013 $2.75 280 $18 80 a) Calculate real and nominal GDP for the year 2012. b) Calculate real and nominal GDP for the year 2013. c) Calculate the GDP deflator for 2012 and 2013. d) Calculate the rate of inflation for 2012. (请展示计算过程和答案,可以平台在线作答,或,拍照上传清晰可辨认的图片)