Select the correct answer

Refer to the data given below calculate for a three - year moving average. Three Year Centered Year Earnings ($m) Moving Average Moving Average 2012 33 2013 59 2014 94 (a) (b) 2015 87 The values for (a) and (b) from the above table are: O a. a = 60, b = 51 O b. a = 95, b = 61 O c. a = 75, b = 71 O d. a = 80, b = 71