Assume that you are an avid golfer and profit $36 worth of pleasure from the first golf hole played on any specific day, however the additional pleasure you profit from playing succeeding holes falls by $2 per extra hole. The $40 greens fee is needed to begin golfing however you can then play as many holes as you like with no extra fees. On days whenever you play golf, you will generally play: (1) 9 holes per day. (2) 12 holes per day. (3) 18 holes per day. (4) 36 holes per day. (e) 24 holes per day.

What is the right answer?